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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions | Total | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings (Deficit) [Member] | Treasury Stock, Common | Accumulated Other Comprehensive Income (Loss) [Member] | Noncontrolling Interest | Cumulative Effect, Period of Adoption, Adjustment | Cumulative Effect, Period of Adoption, Adjustment Retained Earnings (Deficit) [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance Outstanding (shares) at Dec. 31, 2021 |  | 2,000 | 942,000 |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2021 | $ 18,326 | $ 1,659 | $ 10 | $ 12,189 | $ 5,550 | $ (1,371) | $ 289 | $ 0 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 548 |  |  |  | 548 |  |  |  |  |
Other comprehensive income (loss), net of tax | (1,503) |  |  |  |  |  | (1,503) |  |  |
Cash dividends declared | (159) |  |  |  | (159) |  |  |  |  |
Preferred stock dividends | (24) |  |  |  | (24) |  |  |  |  |
Shares repurchased (in shares) |  |  | (9,000) |  |  |  |  |  |  |
Impact of share repurchase, value | (215) |  |  | (215) |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other, shares |  |  | 0 |  |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other | 9 |  |  | 9 |  |  |  |  |  |
Ending Balance Outstanding (shares) at Mar. 31, 2022 |  | 2,000 | 933,000 |  |  |  |  |  |  |
Ending Balance at Mar. 31, 2022 | 16,982 | $ 1,659 | $ 10 | 11,983 | 5,915 | (1,371) | (1,214) | 0 |  |
Beginning Balance Outstanding (shares) at Dec. 31, 2021 |  | 2,000 | 942,000 |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2021 | 18,326 | $ 1,659 | $ 10 | 12,189 | 5,550 | (1,371) | 289 | 0 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 1,560 |  |  |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | (3,921) |  |  |  |  |  |  |  |  |
Ending Balance Outstanding (shares) at Sep. 30, 2022 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Ending Balance at Sep. 30, 2022 | 15,173 | $ 1,659 | $ 10 | 11,976 | 6,531 | (1,371) | (3,632) | 0 |  |
Beginning Balance Outstanding (shares) at Mar. 31, 2022 |  | 2,000 | 933,000 |  |  |  |  |  |  |
Beginning Balance at Mar. 31, 2022 | 16,982 | $ 1,659 | $ 10 | 11,983 | 5,915 | (1,371) | (1,214) | 0 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 583 |  |  |  | 583 |  |  |  |  |
Other comprehensive income (loss), net of tax | (853) |  |  |  |  |  | (853) |  |  |
Cash dividends declared | (159) |  |  |  | (159) |  |  |  |  |
Preferred stock dividends | (25) |  |  |  | (25) |  |  |  |  |
Shares repurchased (in shares) |  |  | (1,000) |  |  |  |  |  |  |
Impact of share repurchase, value | (15) |  |  | (15) |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other, shares |  |  | 0 |  |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other | (6) |  |  | (6) |  |  |  |  |  |
Ending Balance Outstanding (shares) at Jun. 30, 2022 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Ending Balance at Jun. 30, 2022 | 16,507 | $ 1,659 | $ 10 | 11,962 | 6,314 | (1,371) | (2,067) | 0 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 429 |  |  |  | 429 |  |  |  |  |
Other comprehensive income (loss), net of tax | (1,565) |  |  |  |  |  | (1,565) |  |  |
Cash dividends declared | (187) |  |  |  | (187) |  |  |  |  |
Preferred stock dividends | (25) |  |  |  | (25) |  |  |  |  |
Impact of stock transactions under compensation plans, net and other, shares |  |  | 0 |  |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other | 14 |  |  | 14 |  |  |  |  |  |
Ending Balance Outstanding (shares) at Sep. 30, 2022 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Ending Balance at Sep. 30, 2022 | 15,173 | $ 1,659 | $ 10 | 11,976 | 6,531 | (1,371) | (3,632) | 0 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Cumulative effect from change in accounting guidance |  |  |  |  |  |  |  |  | $ 28 | $ 28
Beginning Balance Outstanding (shares) at Dec. 31, 2022 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2022 | 15,947 | $ 1,659 | $ 10 | 11,988 | 7,004 | (1,371) | (3,343) | 4 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 612 |  |  |  | 612 |  |  |  |  |
Other comprehensive income (loss), net of tax | 499 |  |  |  |  |  | 499 |  |  |
Cash dividends declared | (187) |  |  |  | (187) |  |  |  |  |
Preferred stock dividends | $ (24) |  |  |  | (24) |  |  |  |  |
Shares repurchased (in shares) | (725) |  |  |  |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other | $ 8 |  |  | 8 |  |  |  |  |  |
Other |  |  |  |  |  |  |  | 15 |  |
Ending Balance Outstanding (shares) at Mar. 31, 2023 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Ending Balance at Mar. 31, 2023 | 16,883 | $ 1,659 | $ 10 | 11,996 | 7,433 | (1,371) | (2,844) | 19 |  |
Beginning Balance Outstanding (shares) at Dec. 31, 2022 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2022 | 15,947 | $ 1,659 | $ 10 | 11,988 | 7,004 | (1,371) | (3,343) | 4 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 1,683 |  |  |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | (893) |  |  |  |  |  |  |  |  |
Ending Balance Outstanding (shares) at Sep. 30, 2023 |  | 2,000 | 939,000 |  |  |  |  |  |  |
Ending Balance at Sep. 30, 2023 | 16,100 | $ 1,659 | $ 10 | 11,996 | 8,042 | (1,371) | (4,236) | 25 |  |
Beginning Balance Outstanding (shares) at Mar. 31, 2023 |  | 2,000 | 934,000 |  |  |  |  |  |  |
Beginning Balance at Mar. 31, 2023 | 16,883 | $ 1,659 | $ 10 | 11,996 | 7,433 | (1,371) | (2,844) | 19 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 581 |  |  |  | 581 |  |  |  |  |
Other comprehensive income (loss), net of tax | (596) |  |  |  |  |  | (596) |  |  |
Cash dividends declared | (187) |  |  |  | (187) |  |  |  |  |
Preferred stock dividends | (25) |  |  |  | (25) |  |  |  |  |
Impact of stock transactions under compensation plans, net and other, shares |  |  | 5,000 |  |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other | (17) |  |  | (17) |  |  |  |  |  |
Other |  |  |  |  |  |  |  | 3 |  |
Ending Balance Outstanding (shares) at Jun. 30, 2023 |  | 2,000 | 939,000 |  |  |  |  |  |  |
Ending Balance at Jun. 30, 2023 | 16,639 | $ 1,659 | $ 10 | 11,979 | 7,802 | (1,371) | (3,440) | 22 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net income | 490 |  |  |  | 490 |  |  |  |  |
Other comprehensive income (loss), net of tax | (796) |  |  |  |  |  | (796) |  |  |
Cash dividends declared | (225) |  |  |  | (225) |  |  |  |  |
Preferred stock dividends | (25) |  |  |  | (25) |  |  |  |  |
Impact of stock transactions under compensation plans, net and other, shares |  |  | 0 |  |  |  |  |  |  |
Impact of stock transactions under compensation plans, net and other | 17 |  |  | 17 |  |  |  |  |  |
Other |  |  |  |  |  |  |  | 3 |  |
Ending Balance Outstanding (shares) at Sep. 30, 2023 |  | 2,000 | 939,000 |  |  |  |  |  |  |
Ending Balance at Sep. 30, 2023 | $ 16,100 | $ 1,659 | $ 10 | $ 11,996 | $ 8,042 | $ (1,371) | $ (4,236) | $ 25 |  |

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