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Accumulated Other Comprehensive Income (Schedule of Other Comprehensive Income Before Reclassifications and Amounts Reclassified from AOCI) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]      
Available-for-sale investment securities, net unrealized holding gains (losses) arising during the period, before tax $ 131 $ (331) $ (226)
Available-for-sale investment securities, net unrealized holding gains (losses) arising during the period, tax benefit (expense) (32) 81 56
Available-for-sale investment securities, net unrealized holding gains (losses) arising during the period, net of tax 99 (250) (170)
Available-for-sale investment securities, net change, before tax 131 (331) (226)
Available-for-sale investment securities, net change, tax benefit (expense) (32) 81 56
Available-for-sale investment securities, net change, net of tax 99 (250) (170)
Cash flow hedges, net unrealized gains (losses) arising during the period, before tax (74) (13) (1)
Cash flow hedges, net unrealized gains (losses) arising during the period, tax benefit (expense) 18 3 1
Cash flow hedges, net unrealized gains (losses) arising during the period, net of tax (56) (10) 0
Cash flow hedges, amounts reclassified from AOCI, before tax 82 4 3
Cash flow hedges, amounts reclassified from AOCI, tax benefit (expense) (20) 1 0
Cash flow hedges, amounts reclassified from AOCI, net of tax 62 5 3
Cash flow hedges, net change, before tax 8 (9) 2
Cash flow hedges, net change, tax benefit (expense) (2) 4 1
Cash flow hedges, net change, net of tax 6 (5) 3
Pension plan, unrealized gains (losses) arising during the period, before tax 12 13 37
Pension plan, unrealized gains (losses) arising during the period, tax benefit (expense) (3) (3) (9)
Pension plan, unrealized gains (losses) arising during the period, net of tax 9 10 28
Pension plan, net change, before tax 12 13 37
Pension plan, net change, tax benefit (expense) (3) (3) (9)
Pension plan, net change, net of tax $ 9 $ 10 $ 28