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v3.20.1

BORROWED FUNDS - Long Term Debt (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 16,437 | $ 14,047
Parent Company |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | 2,783 |
Parent Company | Subordinated Debt | 4.150% fixed-rate subordinated debt, due September 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 348 | 348
Interest rate | 4.15% |
Parent Company | Subordinated Debt | 3.750% fixed-rate subordinated debt, due July 2024 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 250 | 250
Interest rate | 3.75% |
Parent Company | Subordinated Debt | 4.023% fixed-rate subordinated debt, due October 2024 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 42 | 42
Interest rate | 4.023% |
Parent Company | Subordinated Debt | 4.350% fixed-rate subordinated debt, due August 2025 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 249 | 249
Interest rate | 4.35% |
Parent Company | Subordinated Debt | 4.300% fixed-rate subordinated debt, due December 2025 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 750 | 750
Interest rate | 4.30% |
Parent Company | Senior Unsecured Notes | 2.375% fixed-rate senior unsecured debt, due July 2021 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 350 | 349
Interest rate | 2.375% |
Parent Company | Senior Unsecured Notes | 2.850% fixed-rate senior unsecured notes, due July 2026 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 496 | 496
Interest rate | 2.85% |
Parent Company | Senior Unsecured Notes | 2.500% fixed-rate senior unsecured notes, due February 2030 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 298 | 0
Interest rate | 2.50% |
CBNA and Other Subsidiaries |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 13,654 |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.250% senior unsecured notes, due March 2020 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 0 | 700
Interest rate | 2.25% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.678% floating-rate senior unsecured notes, due 2020 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 0 | 300
Interest rate | 2.678% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.217% floating-rate senior unsecured notes, due 2020 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 250 | 250
Interest rate | 2.217% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.200% senior unsecured notes, due May 2020 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 500 | 500
Interest rate | 2.20% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.250% senior unsecured notes, due October 2020 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 753 | 750
Interest rate | 2.25% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.550% senior unsecured notes, due May 2021 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 1,005 | 991
Interest rate | 2.55% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.250% senior unsecured notes, due February 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 724 | 711
Interest rate | 3.25% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.424% floating-rate senior unsecured notes, due February 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 299 | 299
Interest rate | 2.424% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.457% floating-rate senior unsecured notes, due 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 250 | 250
Interest rate | 2.457% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.650% senior unsecured notes, due May 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 514 | 501
Interest rate | 2.65% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.700% senior unsecured notes, due March 2023 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 532 | 515
Interest rate | 3.70% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.325% floating-rate senior unsecured notes, due March 2023 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 249 | 249
Interest rate | 2.325% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750% senior unsecured notes, due February 2026 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 555 | 521
Interest rate | 3.75% |
CBNA and Other Subsidiaries | Federal Home Loan Bank advances |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 8,007 | 5,008
Weighted average rate | 0.56% |
CBNA and Other Subsidiaries | Other |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 16 | $ 18

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