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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement of Comprehensive Income [Abstract] |  |  |  |  |  |
Net income (loss) |  | $ 1,168 | $ 497 | [1] | $ 1,202 | [1]
Net unrealized holding (losses) gains arising during the period |  | (406) | 191 |  | 257 |
Less reclassification adjustment for net securities losses included in net income |  | 0 | 0 |  | (8) |
Change in net unrealized (losses) gains before income taxes |  | (406) | 191 |  | 265 |
Cash flow hedges, Net (losses) gains arising during the period |  | (35) | 229 |  | 44 |
Net cash flow hedge gains included in interest and fees on loans |  |  |  |  | 0 |
Change in net cash flow hedge gains arising during the period, net of tax |  | (130) | 159 |  | 44 |
Actuarial (gain) loss | [2] | 159 | 128 |  | 157 |
Prior service (cost) credit arising during the period |  | 1 | 0 |  | 0 |
Amortization of net actuarial loss | [2] | 40 | 47 |  | 42 |
Amortization of prior service credit |  | (25) | (27) |  | (27) |
Change in defined benefit pension and other postretirement plans adjustment before income taxes |  | 175 | 148 |  | 172 |
Total other comprehensive (loss) income before income taxes |  | (361) | 498 |  | 481 |
(Benefit) provision for income taxes |  | (85) | 118 |  | 111 |
Total other comprehensive (loss) income, net of tax |  | (276) | 380 |  | 370 |
Comprehensive Income |  | $ 892 | $ 877 |  | $ 1,572 |
[1] | See Defined Benefit Pension and Other Postretirement Costs in Note 1.
[2] | Balances at beginning and end of period, net of tax, and changes for the years ended December 31, 2020 and 2019 have been recast to reflect the retrospective application of the Corporation's election to change the accounting method for certain components of the qualified defined benefit pension plan as of January 1, 2021. Refer to Note 1 for further information.

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