Loans Held-for-Investment (Credit Quality Indicators) (Details) - USD ($)
$ in Millions |
Jun. 30, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
$ 5,734
|
$ 6,241
|
$ 4,237
|
| Loans held-for-investment, net |
5,822
|
6,352
|
4,448
|
| Commercial real estate |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
976
|
814
|
620
|
| Loans held-for-investment, net |
976
|
814
|
620
|
| Commercial and industrial |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
615
|
552
|
429
|
| Loans held-for-investment, net |
615
|
552
|
429
|
| Warehouse lending |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
1,651
|
1,336
|
769
|
| Loans held-for-investment, net |
1,651
|
1,336
|
769
|
| Total commercial loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
3,242
|
2,702
|
|
| Loans held-for-investment, net |
3,242
|
2,702
|
1,818
|
| Residential first mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
2,070
|
3,094
|
2,167
|
| Loans held-for-investment, net |
2,075
|
3,100
|
2,193
|
| Second mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
88
|
93
|
96
|
| Loans held-for-investment, net |
127
|
135
|
149
|
| HELOC |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
302
|
321
|
125
|
| Loans held-for-investment, net |
346
|
384
|
257
|
| Other |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
32
|
31
|
31
|
| Loans held-for-investment, net |
32
|
31
|
31
|
| Total consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment, net |
|
3,650
|
2,630
|
| Consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment, net |
2,580
|
3,650
|
2,630
|
| Pass | Commercial real estate |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
934
|
766
|
578
|
| Pass | Commercial and industrial |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
562
|
492
|
398
|
| Pass | Warehouse lending |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
1,505
|
1,181
|
650
|
| Pass | Total commercial loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
3,001
|
2,439
|
1,626
|
| Pass | Residential first mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
2,019
|
2,993
|
1,764
|
| Pass | Second mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
93
|
101
|
111
|
| Pass | HELOC |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
315
|
353
|
233
|
| Pass | Other |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
32
|
31
|
31
|
| Pass | Total consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
|
3,478
|
2,139
|
| Pass | Consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
2,459
|
3,478
|
|
| Watch | Commercial real estate |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
38
|
42
|
29
|
| Watch | Commercial and industrial |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
20
|
30
|
10
|
| Watch | Warehouse lending |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
146
|
155
|
119
|
| Watch | Total commercial loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
204
|
227
|
158
|
| Watch | Residential first mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
21
|
49
|
314
|
| Watch | Second mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
31
|
32
|
36
|
| Watch | HELOC |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
22
|
22
|
21
|
| Watch | Other |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
0
|
0
|
0
|
| Watch | Total consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
|
103
|
371
|
| Watch | Consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
74
|
103
|
|
| Special mention | Commercial real estate |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
3
|
2
|
2
|
| Special mention | Commercial and industrial |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
32
|
21
|
0
|
| Special mention | Warehouse lending |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
0
|
0
|
0
|
| Special mention | Total commercial loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
35
|
23
|
2
|
| Substandard | Commercial real estate |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
1
|
4
|
11
|
| Substandard | Commercial and industrial |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
1
|
9
|
21
|
| Substandard | Warehouse lending |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
0
|
0
|
0
|
| Substandard | Total commercial loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
2
|
13
|
32
|
| Substandard | Residential first mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
35
|
58
|
115
|
| Substandard | Second mortgage |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
3
|
2
|
2
|
| Substandard | HELOC |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
9
|
9
|
3
|
| Substandard | Other |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
0
|
0
|
0
|
| Substandard | Total consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
|
69
|
$ 120
|
| Substandard | Consumer loans |
|
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
|
| Loans held-for-investment |
$ 47
|
$ 69
|
|