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v3.21.1

BORROWED FUNDS - Long Term Debt (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 USD ($) note | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 8,316 | $ 8,346
Private Exchange Offers |  |
Debt Instrument [Line Items] |  |
Principal amount | $ 265 |
Number of outstanding subordinated notes exchanged | note | 5 |
Parent Company |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 3,442 |
Parent Company | Subordinated Debt | 4.150% fixed-rate subordinated debt, due September 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 168 | 182
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 | $ 90 | 159
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 | $ 17 | 25
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 | $ 133 | 193
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 | $ 336 | 450
Interest rate | 4.30% |
Parent Company | Subordinated Debt | 3.750% Fixed Rate Subordinated Debt, Due February 2031 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 69 | 0
Interest rate | 3.75% |
Parent Company | Subordinated Debt | 4.300% Fixed Rate Subordinated Debt, Due February 2031 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 135 | 0
Interest rate | 4.30% |
Parent Company | Subordinated Debt | 4.350% Fixed Rate Subordinated Debt, Due February 2031 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 60 | 0
Interest rate | 4.35% |
Parent Company | Subordinated Debt | 2.638% fixed-rate subordinated debt, due September 2032 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 545 | 543
Parent Company | Senior Unsecured Notes | 2.375% fixed-rate senior unsecured debt, due July 2021 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 350 | 350
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 | $ 497 | 497
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 | $ 297 | 297
Interest rate | 2.50% |
Parent Company | Senior Unsecured Notes | 3.250% fixed-rate senior unsecured notes, due April 2030 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 745 | 745
Interest rate | 3.25% |
Parent Company | Senior Unsecured Notes | 2.638% fixed-rate subordinated debt, due September 2032 |  |
Debt Instrument [Line Items] |  |
Interest rate | 2.638% |
CBNA and Other Subsidiaries |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 4,874 |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750% Fixed Rate Subordinated Debt, Due February 2031 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.75% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 4.300% Fixed Rate Subordinated Debt, Due February 2031 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.30% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 4.350% Fixed Rate Subordinated Debt, Due February 2031 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.35% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.550% senior unsecured notes, due May 2021 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 1,000 | 1,003
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 | $ 712 | 716
Interest rate | 3.25% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 0.941% Floating Rate Senior Unsecured Notes, Due February 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 300 | 299
Interest rate | 0.918% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 1.042% Floating Rate Senior Unsecured Notes, Due May 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 250 | 250
Interest rate | 1.00% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.650% senior unsecured notes, due May 2022 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 508 | 510
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 | $ 523 | 527
Interest rate | 3.70% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 1.201% Floating Rate Senior Unsecured Notes Due March 2023 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 250 | 249
Interest rate | 1.143% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.250% senior unsecured notes, due April 2025 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 746 | 746
Interest rate | 2.25% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750% senior unsecured notes, due February 2026 |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 536 | 551
Interest rate | 3.75% |
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750%, 4.300% And 4.350% Senior Notes Due 2031 |  |
Debt Instrument [Line Items] |  |
Redeemable period prior to maturity | 5 years |
CBNA and Other Subsidiaries | Federal Home Loan Bank advances |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 19 | 19
Weighted average rate | 0.92% |
CBNA and Other Subsidiaries | Other |  |
Debt Instrument [Line Items] |  |
Long-term borrowed funds | $ 30 | $ 35

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