Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT SECURITIES AND OTHER SECURITIES - Schedule of Amortized Cost, Fair Value, and Gross Unrealized Gains and Losses (Details)

v3.19.3
INVESTMENT SECURITIES AND OTHER SECURITIES - Schedule of Amortized Cost, Fair Value, and Gross Unrealized Gains and Losses (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost $ 14,176 $ 14,108
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 158 31
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 48 359
Debt Securities, Available-for-sale 14,286 13,780
Debt Securities, Held-to-maturity 8,430 8,565
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 157 2
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (3) (281)
Debt Securities, Held-to-maturity, Fair Value 8,584 8,286
Equity Securities, FV-NI, Cost 455 564
Equity Securities, FV-NI, Accumulated Gross Unrealized Gain, before Tax 0 1
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss, before Tax 0 0
Equity Securities, FV-NI 455 565
US Treasury Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 10 5
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 0 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 0
Debt Securities, Available-for-sale 10 5
Collateralized Mortgage Obligations [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 6,668 7,185
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 71 15
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 15 201
Debt Securities, Available-for-sale 6,724 6,999
Debt Securities, Held-to-maturity 1,970 2,124
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 41 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (3) (47)
Debt Securities, Held-to-maturity, Fair Value 2,008 2,077
Residential Mortgage Backed Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 2,355 1,261
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 39 9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 1 15
Debt Securities, Available-for-sale 2,393 1,255
Debt Securities, Held-to-maturity 2,065 1,851
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 45 2
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss 0 (42)
Debt Securities, Held-to-maturity, Fair Value 2,110 1,811
Commercial Mortgage Backed Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 1,237 1,641
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 3 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 1 58
Debt Securities, Available-for-sale 1,239 1,583
Debt Securities, Held-to-maturity 4,075 4,235
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 66 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss 0 (186)
Debt Securities, Held-to-maturity, Fair Value 4,141 4,049
Other Federal Agencies [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 117 128
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 0 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 2
Debt Securities, Available-for-sale 117 126
Debt Securities, Held-to-maturity 316 350
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 5 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss 0 (6)
Debt Securities, Held-to-maturity, Fair Value 321 344
US Government-sponsored Enterprises Debt Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 10,387 10,220
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 113 24
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 17 276
Debt Securities, Available-for-sale 10,483 9,968
Debt Securities, Held-to-maturity 8,426 8,560
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 157 2
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss (3) (281)
Debt Securities, Held-to-maturity, Fair Value 8,580 8,281
Municipal securities    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 3,147 3,512
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 35 6
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 30 78
Debt Securities, Available-for-sale 3,152 3,440
Debt Securities, Held-to-maturity 4 5
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain 0 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss 0 0
Debt Securities, Held-to-maturity, Fair Value 4 5
Asset-backed Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 588 318
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 8 1
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 1 4
Debt Securities, Available-for-sale 595 315
Corporate Debt Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 50 54
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 2 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 1
Debt Securities, Available-for-sale 52 53
Other Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 4 4
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 0 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 0
Debt Securities, Available-for-sale 4 4
Mutual Fund [Member]    
Schedule of investment securities and other securities [Line Items]    
Equity Securities, FV-NI, Cost 53 20
Equity Securities, FV-NI, Accumulated Gross Unrealized Gain, before Tax 0 0
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss, before Tax 0 0
Equity Securities, FV-NI 53 20
Equity Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Equity Securities, FV-NI, Cost 1 1
Equity Securities, FV-NI, Accumulated Gross Unrealized Gain, before Tax 0 1
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss, before Tax 0 0
Equity Securities, FV-NI 1 2
Investment in Federal Home Loan Bank Stock [Member] | Nonmarketable Equity Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Equity Securities, FV-NI, Cost 104 248
Equity Securities, FV-NI, Accumulated Gross Unrealized Gain, before Tax 0 0
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss, before Tax 0 0
Equity Securities, FV-NI 104 248
Investment in Federal Reserve Stock [Member] | Nonmarketable Equity Securities [Member]    
Schedule of investment securities and other securities [Line Items]    
Equity Securities, FV-NI, Cost 297 295
Equity Securities, FV-NI, Accumulated Gross Unrealized Gain, before Tax 0 0
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss, before Tax 0 0
Equity Securities, FV-NI $ 297 $ 295