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v3.22.1

Total Equity and Other Comprehensive Income (Accumulated Other Comprehensive Income (Loss) Components) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Equity, Beginning Balance | $ 55,726.0 | $ 54,041.0
Other comprehensive income (loss), net of tax | (6,140.0) | (1,480.0)
Equity, Ending Balance | 49,216.0 | 53,879.0
Transferred securities from available for sale to held to maturity | 18,700.0 |
Net unrealized losses, related to securities transferred to held to maturity | 1,300.0 |
Pretax loss included in AOCI from derivatives | (22.1) |
Total |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Equity, Beginning Balance | 409.0 | 2,770.0
Other comprehensive income (loss), net of tax | (6,140.0) | (1,480.0)
Equity, Ending Balance | (5,731.0) | 1,290.0
Debt securities |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Equity, Beginning Balance | 589.0 | 2,462.0
Other comprehensive income (loss), net of tax | (4,827.0) | (913.0)
Equity, Ending Balance | (4,238.0) | 1,549.0
Cash flow hedge derivatives |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Equity, Beginning Balance | (201.0) | 659.0
Other comprehensive income (loss), net of tax | (1,344.0) | (592.0)
Equity, Ending Balance | (1,545.0) | 67.0
Pension and other postretirement benefit plan adjustments |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Equity, Beginning Balance | 27.0 | (345.0)
Other comprehensive income (loss), net of tax | 41.0 | 23.0
Equity, Ending Balance | 68.0 | (322.0)
Other |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Equity, Beginning Balance | (6.0) | (6.0)
Other comprehensive income (loss), net of tax | (10.0) | 2.0
Equity, Ending Balance | $ (16.0) | $ (4.0)

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