Regulatory Matters (Details) - USD ($)
$ in Millions |
12 Months Ended |
|
|
Dec. 31, 2015 |
Jun. 30, 2016 |
Dec. 31, 2014 |
| Tangible Capital [Abstract] |
|
|
|
| Tangible capital (to tangible assets), actual amount |
$ 1,435
|
$ 1,514
|
$ 1,184
|
| Tangible capital (to tangible assets), actual ratio (percent) |
11.51%
|
11.59%
|
12.59%
|
| Tier 1 Capital [Abstract] |
|
|
|
| Tier 1 capital, actual amount |
$ 1,435
|
$ 1,514
|
$ 1,184
|
| Tier 1 capital (to adjusted tangible assets), actual ratio (percent) |
11.51%
|
11.59%
|
12.59%
|
| Tier 1 capital, for capital adequacy purposes amount |
$ 499
|
$ 523
|
$ 376
|
| Tier 1 capital (to adjusted tangible assets), for capital adequacy purposes ratio (percent) |
4.00%
|
4.00%
|
4.00%
|
| Tier 1 capital, capitalized under prompt corrective action provision amount |
$ 624
|
$ 653
|
$ 470
|
| Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio (percent) |
5.00%
|
5.00%
|
5.00%
|
| Common Equity Tier 1 Capital [Abstract] |
|
|
|
| Common equity Tier 1 capital (to RWA), actual amount |
$ 1,065
|
$ 1,086
|
|
| Common equity Tier 1 capital (to RWA), actual ratio (percent) |
14.09%
|
13.55%
|
|
| Common equity Tier 1 capital (to RWA), For Capital Adequacy Purposes, Amount |
$ 340
|
$ 361
|
|
| Common equity Tier 1 capital (to RWA), For Capital Adequacy Purposes, Ratio (percent) |
4.50%
|
4.50%
|
|
| Common equity Tier 1 capital (to RWA), Well Capitalized Under Prompt Corrective Action Provisions, Amount |
$ 491
|
$ 521
|
|
| Common equity Tier 1 capital (to RWA), Well Capitalized Under Prompt Corrective Action Provisions, Ratio (percent) |
6.50%
|
6.50%
|
|
| Tier One Risk Based Capital [Abstract] |
|
|
|
| Tier 1 capital, actual amount |
$ 1,435
|
$ 1,514
|
$ 1,184
|
| Tier 1 capital (to risk weighted assets), actual ratio (percent) |
18.98%
|
18.89%
|
22.81%
|
| Tier 1 capital, for capital adequacy purposes amount |
$ 454
|
$ 481
|
$ 208
|
| Tier 1 capital (to risk weighted assets), for capital adequacy purposes ratio (percent) |
6.00%
|
6.00%
|
4.00%
|
| Tier 1 capital, capitalized under prompt corrective action provision amount |
$ 605
|
$ 642
|
$ 311
|
| Tier 1 capital (to risk weighted assets), capitalized under prompt corrective action provision ratio (percent) |
8.00%
|
8.00%
|
6.00%
|
| Capital [Abstract] |
|
|
|
| Total capital, actual amount |
$ 1,534
|
$ 1,618
|
$ 1,252
|
| Total capital (to risk weighted assets), actual ratio (percent) |
20.28%
|
20.19%
|
24.12%
|
| Total capital, for capital adequacy purposes amount |
$ 605
|
$ 642
|
$ 415
|
| Total capital (to risk weighted assets), for capital adequacy purposes ratio (percent) |
8.00%
|
8.00%
|
8.00%
|
| Total capital, capitalized under prompt corrective action provisions amount |
$ 756
|
$ 802
|
$ 519
|
| Total capital (to risk weighted assets), capitalized under prompt corrective action provisions ratio (percent) |
10.00%
|
10.00%
|
10.00%
|
| Consent order, term of written capital plan (years) |
3 years
|
|
|
| Subsidiaries |
|
|
|
| Tangible Capital [Abstract] |
|
|
|
| Tangible capital (to tangible assets), actual amount |
$ 1,472
|
$ 1,576
|
$ 1,167
|
| Tangible capital (to tangible assets), actual ratio (percent) |
11.79%
|
12.03%
|
12.43%
|
| Tier 1 Capital [Abstract] |
|
|
|
| Tier 1 capital, actual amount |
$ 1,472
|
$ 1,576
|
$ 1,167
|
| Tier 1 capital (to adjusted tangible assets), actual ratio (percent) |
11.79%
|
12.03%
|
12.43%
|
| Tier 1 capital, for capital adequacy purposes amount |
$ 500
|
$ 524
|
$ 376
|
| Tier 1 capital (to adjusted tangible assets), for capital adequacy purposes ratio (percent) |
4.00%
|
4.00%
|
4.00%
|
| Tier 1 capital, capitalized under prompt corrective action provision amount |
$ 625
|
$ 655
|
$ 470
|
| Tier 1 capital (to adjusted tangible assets), capitalized under prompt corrective action provision ratio (percent) |
5.00%
|
5.00%
|
5.00%
|
| Common Equity Tier 1 Capital [Abstract] |
|
|
|
| Common equity Tier 1 capital (to RWA), actual amount |
$ 1,472
|
$ 1,576
|
|
| Common equity Tier 1 capital (to RWA), actual ratio (percent) |
19.42%
|
19.58%
|
|
| Common equity Tier 1 capital (to RWA), For Capital Adequacy Purposes, Amount |
$ 341
|
$ 362
|
|
| Common equity Tier 1 capital (to RWA), For Capital Adequacy Purposes, Ratio (percent) |
4.50%
|
4.50%
|
|
| Common equity Tier 1 capital (to RWA), Well Capitalized Under Prompt Corrective Action Provisions, Amount |
$ 493
|
$ 524
|
|
| Common equity Tier 1 capital (to RWA), Well Capitalized Under Prompt Corrective Action Provisions, Ratio (percent) |
6.50%
|
6.50%
|
|
| Tier One Risk Based Capital [Abstract] |
|
|
|
| Tier 1 capital, actual amount |
$ 1,472
|
$ 1,576
|
$ 1,167
|
| Tier 1 capital (to risk weighted assets), actual ratio (percent) |
19.42%
|
19.58%
|
22.54%
|
| Tier 1 capital, for capital adequacy purposes amount |
$ 455
|
$ 483
|
$ 207
|
| Tier 1 capital (to risk weighted assets), for capital adequacy purposes ratio (percent) |
6.00%
|
6.00%
|
4.00%
|
| Tier 1 capital, capitalized under prompt corrective action provision amount |
$ 607
|
$ 644
|
$ 311
|
| Tier 1 capital (to risk weighted assets), capitalized under prompt corrective action provision ratio (percent) |
8.00%
|
8.00%
|
6.00%
|
| Capital [Abstract] |
|
|
|
| Total capital, actual amount |
$ 1,570
|
$ 1,679
|
$ 1,235
|
| Total capital (to risk weighted assets), actual ratio (percent) |
20.71%
|
20.86%
|
23.85%
|
| Total capital, for capital adequacy purposes amount |
$ 607
|
$ 644
|
$ 414
|
| Total capital (to risk weighted assets), for capital adequacy purposes ratio (percent) |
8.00%
|
8.00%
|
8.00%
|
| Total capital, capitalized under prompt corrective action provisions amount |
$ 758
|
$ 806
|
$ 518
|
| Total capital (to risk weighted assets), capitalized under prompt corrective action provisions ratio (percent) |
10.00%
|
10.00%
|
10.00%
|