v3.20.4
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Other comprehensive income (loss), net of tax:      
Net income $ 1,094 $ 1,582 $ 1,759
Unrealized losses on securities transferred to held to maturity:      
Unrealized losses on securities transferred to held to maturity during the period, net of tax 0 0 0
Less: Reclassification Adjustments for Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax (6) (5) (6)
Net change in unrealized losses on securities transferred to held to maturity, net of tax 6 5 6
Unrealized gains (losses) on securities available for sale:      
Less: reclassification adjustments for securities gains (losses) realized in net income (net of tax) 3 (21) 0
Net change in unrealized gains (losses) on securities available for sale, net of tax 589 602 (244)
Unrealized gains (losses) on derivative instruments designated as cash flow hedges:      
Less: reclassification adjustments for gains (losses) on derivative instruments realized in net income (net of tax) 195 (18) 9
Net change in unrealized gains (losses) on derivative instruments, net of tax 882 385 (12)
Defined benefit pension plans and other post employment benefits:      
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax (36) (32) (28)
Net change from defined benefit pension plans and other post employment benefits, net of tax (72) (118) 35
Other comprehensive income (loss), net of tax 1,405 874 (215)
Accumulated Net Gain (Loss) from Derivative Instruments Designated as Cash Flow Hedges [Member]      
Other comprehensive income (loss), net of tax:      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax 1,077 367 (3)
Defined benefit pension plans and other post employment benefits:      
Other comprehensive income (loss), net of tax   385 (12)
Accumulated Net Unrealized Securities Available For Sale Gain (Loss) [Member]      
Unrealized gains (losses) on securities available for sale:      
Unrealized holding gains (losses) arising during the period on securities available for sale, net of tax 592 581 (244)
Less: reclassification adjustments for securities gains (losses) realized in net income (net of tax) [1] (3) 21  
Defined benefit pension plans and other post employment benefits:      
Other comprehensive income (loss), net of tax 589 602  
Accumulated Defined Benefit Pension Plans Adjustment [Member]      
Defined benefit pension plans and other post employment benefits:      
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax (108) (150) 7
Other comprehensive income (loss), net of tax (72) (118) 35
Other Comprehensive Income (Loss) [Member]      
Defined benefit pension plans and other post employment benefits:      
Comprehensive income $ 2,499 $ 2,456 $ 1,544
[1] Reclassification amount is recognized in securities gains (losses), net in the consolidated statements of income.