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v3.23.1

Borrowings - Schedule of Long-term Borrowings (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |
Capital lease obligations | $ 7 | $ 7
Unamortized issuance costs | (1) | (1)
Unamortized purchase accounting adjustment | 139 | (87)
Total long-term borrowings | 45,085 | 4,459
Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Unamortized purchase accounting adjustment | 65 | 69
Parent | Fixed-to-Floating subordinated notes at 3.375% | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 350 | 350
Debt instrument, stated interest rate | 3.375% |
Parent | Junior subordinated debentures at 3-month LIBOR plus 2.25% (FCB/SC Capital Trust II) | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 20 | 20
Parent | Junior subordinated debentures at 3-month LIBOR plus 2.25% (FCB/SC Capital Trust II) | Subordinated Debt | London Interbank Offered Rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.25% |
Parent | Junior subordinated debentures at 3-month LIBOR plus 1.75% (FCB/NC Capital Trust III) | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 88 | 88
Parent | Junior subordinated debentures at 3-month LIBOR plus 1.75% (FCB/NC Capital Trust III) | Subordinated Debt | London Interbank Offered Rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 1.75% |
Subsidiaries | Senior unsecured fixed to floating rate notes at 3.929% | Senior Notes |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 500 | 500
Debt instrument, stated interest rate | 3.929% |
Subsidiaries | Senior unsecured fixed to floating rate notes at 2.969% | Senior Notes |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 315 | 315
Debt instrument, stated interest rate | 2.969% |
Subsidiaries | Fixed senior unsecured notes at 6.00% | Senior Notes |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 51 | 51
Debt instrument, stated interest rate | 6.00% |
Subsidiaries | Fixed subordinated notes at 6.125% | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 400 | 400
Debt instrument, stated interest rate | 6.125% |
Subsidiaries | Fixed-to-Fixed subordinated notes at 4.125% | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 100 | 100
Debt instrument, stated interest rate | 4.125% |
Subsidiaries | Junior subordinated debentures at 3-month LIBOR plus 2.80% (Macon Capital Trust I) | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 14 | 14
Subsidiaries | Junior subordinated debentures at 3-month LIBOR plus 2.80% (Macon Capital Trust I) | Subordinated Debt | London Interbank Offered Rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.80% |
Subsidiaries | Junior subordinated debentures at 3-month LIBOR plus 2.85% (SCB Capital Trust I) | Subordinated Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 10 | 10
Subsidiaries | Junior subordinated debentures at 3-month LIBOR plus 2.85% (SCB Capital Trust I) | Subordinated Debt | London Interbank Offered Rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 2.85% |
Subsidiaries | Notes payable to FHLB of Atlanta at overnight SOFR plus spreads ranging from 0.24% to 0.48%. | Secured Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 8,000 | 2,500
Subsidiaries | Notes payable to FHLB of Atlanta at overnight SOFR plus spreads ranging from 0.24% to 0.48%. | Secured Debt | Secured Overnight Financing Rate (SOFR) | Minimum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 0.24% |
Subsidiaries | Notes payable to FHLB of Atlanta at overnight SOFR plus spreads ranging from 0.24% to 0.48%. | Secured Debt | Secured Overnight Financing Rate (SOFR) | Maximum |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate | 0.48% |
Subsidiaries | Fixed senior unsecured notes at 3.50% | Senior Notes |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 35,370 | 0
Debt instrument, stated interest rate | 3.50% |
Subsidiaries | Other secured financings | Secured Debt |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 0 | $ 18

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