Fair Value Measurements (Fair Value of Financial Instruments) (Details) - USD ($)
$ in Millions |
Jun. 30, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Investment securities available-for-sale |
$ 1,145
|
$ 1,294
|
$ 1,672
|
| Investment securities held-to-maturity |
1,237
|
1,262
|
|
| Loans held-for-sale |
3,071
|
2,541
|
1,196
|
| Loans held-for-investment |
88
|
111
|
211
|
| Mortgage servicing rights |
301
|
296
|
258
|
| Long-term debt |
|
0
|
(84)
|
| Level 2 |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Investment securities available-for-sale |
1,145
|
|
|
| Carrying Value |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Cash and cash equivalents |
184
|
208
|
136
|
| Investment securities available-for-sale |
1,145
|
1,294
|
1,672
|
| Investment securities held-to-maturity |
1,211
|
1,268
|
|
| Loans held-for-sale |
3,091
|
2,576
|
1,244
|
| Loans with government guarantees |
435
|
485
|
1,128
|
| Loans held-for-investment |
5,672
|
6,165
|
4,151
|
| Repossessed assets |
19
|
17
|
19
|
| Federal Home Loan Bank stock |
172
|
170
|
155
|
| Mortgage servicing rights |
301
|
296
|
258
|
| Bank owned life insurance |
267
|
178
|
|
| Other assets, foreclosure claims |
178
|
210
|
|
| Other investments |
|
|
100
|
| Derivative Asset, Fair Value, Gross Asset |
178
|
58
|
|
| Federal Home Loan Bank advances |
(2,646)
|
(3,541)
|
(514)
|
| Long-term debt |
(247)
|
(247)
|
(331)
|
| Warrant liabilities |
(9)
|
(8)
|
|
| DOJ litigation settlement |
(84)
|
(84)
|
(82)
|
| Fair Value |
133
|
18
|
|
| Carrying Value | Demand deposits and savings accounts |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(5,071)
|
(5,008)
|
(4,565)
|
| Carrying Value | Certificates of deposit |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(1,023)
|
(826)
|
(813)
|
| Carrying Value | Government deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(974)
|
(1,062)
|
(918)
|
| Carrying Value | Company controlled deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(1,503)
|
(1,039)
|
(773)
|
| Carrying Value | Rate lock commitments |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
31
|
| Carrying Value | Forward agency and loan sales |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative liabilities |
|
|
(13)
|
| Carrying Value | Interest rate swaps and swaptions |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Warrant liabilities |
|
|
(6)
|
| Carrying Value | Interest rate swaps |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
6
|
| Derivative liabilities |
|
|
(6)
|
| Carrying Value | U.S. Treasury futures |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
7
|
| Derivative liabilities |
|
|
(1)
|
| Carrying Value | Agency forwards |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
2
|
| Total fair value |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Cash and cash equivalents |
184
|
208
|
136
|
| Investment securities available-for-sale |
1,145
|
1,294
|
1,672
|
| Investment securities held-to-maturity |
1,237
|
1,262
|
|
| Loans held-for-sale |
3,094
|
2,578
|
1,196
|
| Loans with government guarantees |
422
|
469
|
1,094
|
| Loans held-for-investment |
5,640
|
6,121
|
3,998
|
| Repossessed assets |
19
|
17
|
19
|
| Federal Home Loan Bank stock |
172
|
170
|
155
|
| Mortgage servicing rights |
301
|
296
|
258
|
| Bank owned life insurance |
267
|
178
|
|
| Other assets, foreclosure claims |
178
|
210
|
|
| Other investments |
|
|
100
|
| Derivative Asset, Fair Value, Gross Asset |
178
|
58
|
|
| Federal Home Loan Bank advances |
(2,635)
|
(3,543)
|
(514)
|
| Long-term debt |
(77)
|
(89)
|
(172)
|
| Warrant liabilities |
(9)
|
(8)
|
|
| DOJ litigation settlement |
(84)
|
(84)
|
(82)
|
| Fair Value |
133
|
18
|
|
| Total fair value | Demand deposits and savings accounts |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(4,863)
|
(4,744)
|
(4,291)
|
| Total fair value | Certificates of deposit |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(1,038)
|
(833)
|
(816)
|
| Total fair value | Government deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(962)
|
(1,045)
|
(884)
|
| Total fair value | Company controlled deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(1,459)
|
(947)
|
(770)
|
| Total fair value | Rate lock commitments |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
31
|
| Total fair value | Forward agency and loan sales |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative liabilities |
|
|
(13)
|
| Total fair value | Interest rate swaps and swaptions |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Warrant liabilities |
|
|
(6)
|
| Total fair value | Interest rate swaps |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
6
|
| Derivative liabilities |
|
|
(6)
|
| Total fair value | U.S. Treasury futures |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
7
|
| Derivative liabilities |
|
|
(1)
|
| Total fair value | Agency forwards |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
2
|
| Total fair value | Level 1 |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Cash and cash equivalents |
184
|
208
|
136
|
| Investment securities available-for-sale |
0
|
0
|
0
|
| Investment securities held-to-maturity |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
0
|
| Loans with government guarantees |
0
|
0
|
0
|
| Loans held-for-investment |
0
|
0
|
0
|
| Repossessed assets |
0
|
0
|
0
|
| Federal Home Loan Bank stock |
0
|
0
|
155
|
| Mortgage servicing rights |
0
|
0
|
0
|
| Bank owned life insurance |
0
|
0
|
|
| Other assets, foreclosure claims |
0
|
0
|
|
| Other investments |
|
|
0
|
| Derivative Asset, Fair Value, Gross Asset |
3
|
0
|
|
| Federal Home Loan Bank advances |
0
|
0
|
(514)
|
| Long-term debt |
0
|
0
|
0
|
| Warrant liabilities |
0
|
0
|
|
| DOJ litigation settlement |
0
|
0
|
0
|
| Fair Value |
3
|
1
|
|
| Total fair value | Level 1 | Demand deposits and savings accounts |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 1 | Certificates of deposit |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 1 | Government deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 1 | Company controlled deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 1 | Rate lock commitments |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Total fair value | Level 1 | Forward agency and loan sales |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative liabilities |
|
|
0
|
| Total fair value | Level 1 | Interest rate swaps and swaptions |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Warrant liabilities |
|
|
0
|
| Total fair value | Level 1 | Interest rate swaps |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Derivative liabilities |
|
|
0
|
| Total fair value | Level 1 | U.S. Treasury futures |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
7
|
| Derivative liabilities |
|
|
(1)
|
| Total fair value | Level 1 | Agency forwards |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
2
|
| Total fair value | Level 2 |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Cash and cash equivalents |
0
|
0
|
0
|
| Investment securities available-for-sale |
|
1,294
|
1,670
|
| Investment securities held-to-maturity |
1,237
|
1,262
|
|
| Loans held-for-sale |
3,094
|
2,578
|
1,196
|
| Loans with government guarantees |
422
|
469
|
1,094
|
| Loans held-for-investment |
6
|
6
|
26
|
| Repossessed assets |
0
|
0
|
0
|
| Federal Home Loan Bank stock |
172
|
170
|
0
|
| Mortgage servicing rights |
0
|
0
|
0
|
| Bank owned life insurance |
267
|
178
|
|
| Other assets, foreclosure claims |
178
|
210
|
|
| Other investments |
|
|
0
|
| Derivative Asset, Fair Value, Gross Asset |
92
|
32
|
|
| Federal Home Loan Bank advances |
(2,635)
|
(3,543)
|
0
|
| Long-term debt |
(77)
|
(89)
|
(88)
|
| Warrant liabilities |
(9)
|
(8)
|
|
| DOJ litigation settlement |
0
|
0
|
0
|
| Fair Value |
130
|
17
|
|
| Total fair value | Level 2 | Demand deposits and savings accounts |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(4,863)
|
(4,744)
|
(4,291)
|
| Total fair value | Level 2 | Certificates of deposit |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(1,038)
|
(833)
|
(816)
|
| Total fair value | Level 2 | Government deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(962)
|
(1,045)
|
(884)
|
| Total fair value | Level 2 | Company controlled deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
(1,459)
|
(947)
|
(770)
|
| Total fair value | Level 2 | Rate lock commitments |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Total fair value | Level 2 | Forward agency and loan sales |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative liabilities |
|
|
(13)
|
| Total fair value | Level 2 | Interest rate swaps and swaptions |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Warrant liabilities |
|
|
(6)
|
| Total fair value | Level 2 | Interest rate swaps |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
6
|
| Derivative liabilities |
|
|
(6)
|
| Total fair value | Level 2 | U.S. Treasury futures |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Derivative liabilities |
|
|
0
|
| Total fair value | Level 2 | Agency forwards |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Total fair value | Level 3 |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Cash and cash equivalents |
0
|
0
|
0
|
| Investment securities available-for-sale |
0
|
0
|
2
|
| Investment securities held-to-maturity |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
0
|
| Loans with government guarantees |
0
|
0
|
0
|
| Loans held-for-investment |
5,634
|
6,115
|
3,972
|
| Repossessed assets |
19
|
17
|
19
|
| Federal Home Loan Bank stock |
0
|
0
|
0
|
| Mortgage servicing rights |
301
|
296
|
258
|
| Bank owned life insurance |
0
|
0
|
|
| Other assets, foreclosure claims |
0
|
0
|
|
| Other investments |
|
|
100
|
| Derivative Asset, Fair Value, Gross Asset |
83
|
26
|
|
| Federal Home Loan Bank advances |
0
|
0
|
0
|
| Long-term debt |
0
|
0
|
(84)
|
| Warrant liabilities |
0
|
0
|
|
| DOJ litigation settlement |
(84)
|
(84)
|
(82)
|
| Fair Value |
0
|
0
|
|
| Total fair value | Level 3 | Demand deposits and savings accounts |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 3 | Certificates of deposit |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 3 | Government deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
0
|
0
|
0
|
| Total fair value | Level 3 | Company controlled deposits |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Deposits |
$ 0
|
$ 0
|
0
|
| Total fair value | Level 3 | Rate lock commitments |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
31
|
| Total fair value | Level 3 | Forward agency and loan sales |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative liabilities |
|
|
0
|
| Total fair value | Level 3 | Interest rate swaps and swaptions |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Warrant liabilities |
|
|
0
|
| Total fair value | Level 3 | Interest rate swaps |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Derivative liabilities |
|
|
0
|
| Total fair value | Level 3 | U.S. Treasury futures |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
0
|
| Derivative liabilities |
|
|
0
|
| Total fair value | Level 3 | Agency forwards |
|
|
|
| Carrying and Fair Values of Financial Instruments [Abstract] |
|
|
|
| Derivative assets |
|
|
$ 0
|