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v3.23.1

Nature of Operations, Basis of Presentation and Summary of Significant Accounting Policies (Summary of Restated Consolidated Statements of Stockholders Equity) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Balance | $ 2,668 | $ 9,654 | $ 15,184 | $ 20,754 | $ 21,165 | $ 21,742 | $ 19,587 | $ 22,699 | $ 20,754 | $ 22,699 | $ 20,754 | $ 22,699 | $ 20,754 | $ 22,699 |
Net income (loss) | 21 | (2,583) | 228 | 92 | 708 | 316 | 645 | 219 | 319 | 864 | (2,264) | 1,180 | (2,241) | 1,887 | $ 499
Total other comprehensive income (loss), net of tax | 960 | (4,291) | (5,589) | (5,189) | (408) | (630) | 1,718 | (3,170) |  |  |  |  | (14,109) | (2,490) | 3,258
Balance | 4,569 | 2,668 | 9,654 | 15,184 | 20,754 | 21,165 | 21,742 | 19,587 | 9,654 | 21,742 | 2,668 | 21,165 | 4,569 | 20,754 | 22,699
Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 986 |  |  |  |  |  |  |  |  |  |  |  | 986 |  |
Preferred Stock [Member] | Series C Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | 493 |  |
Preferred Stock [Member] | Series D Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | 493 |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 4,534 | 4,546 | 4,586 | 4,735 | 4,956 | 5,021 | 5,057 | 5,082 | 4,735 | 5,082 | 4,735 | 5,082 | 4,735 | 5,082 | 5,162
Stock compensation/issued for benefit plans |  | 15 | 9 | 6 |  | 16 | 23 | 25 |  |  |  |  | 40 | 85 | 48
Retirement of common stock/cancellation of shares |  | (27) | (49) | (155) |  | (81) | (59) | (50) |  |  |  |  | (231) | (432) | (128)
Balance | 4,544 | 4,534 | 4,546 | 4,586 | 4,735 | 4,956 | 5,021 | 5,057 | 4,546 | 5,021 | 4,534 | 4,956 | 4,544 | 4,735 | 5,082
Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 6,762 | 9,445 | 9,346 | 9,578 | 9,360 | 9,242 | 8,769 | 8,686 | 9,578 | 8,686 | 9,578 | 8,686 | 9,578 | 8,686 | 8,854
Net income (loss) |  | (2,583) | 228 | 92 |  | 316 | 645 | 219 |  |  |  |  | (2,241) | 1,887 | 499
Retirement of common stock/cancellation of shares |  | (23) | (51) | (245) |  | (119) | (91) | (55) |  |  |  |  | (319) | (673) | (147)
Common stock dividends declared |  | (77) | (78) | (79) |  | (79) | (81) | (81) |  |  |  |  | (311) | (322) | (317)
Balance | 6,707 | 6,762 | 9,445 | 9,346 | 9,578 | 9,360 | 9,242 | 8,769 | 9,445 | 9,242 | 6,762 | 9,360 | 6,707 | 9,578 | 8,686
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | (8,628) | (4,337) | 1,252 | 6,441 | 6,849 | 7,479 | 5,761 | 8,931 | 6,441 | 8,931 | 6,441 | 8,931 | 6,441 | 8,931 | 5,673
Total other comprehensive income (loss), net of tax |  | (4,291) | (5,589) | (5,189) |  | (630) | 1,718 | (3,170) |  |  |  |  | (14,109) | (2,490) | 3,258
Balance | (7,668) | (8,628) | (4,337) | 1,252 | 6,441 | 6,849 | 7,479 | 5,761 | (4,337) | 7,479 | (8,628) | 6,849 | (7,668) | 6,441 | 8,931
Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (203)
As Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 2,217 | 9,188 | 14,712 | 20,272 | 21,170 | 21,745 | 19,593 |  | 20,272 |  | 20,272 |  | 20,272 |  |
Net income (loss) | 5 | (2,574) | 238 | 104 | 220 | 318 | 642 | 225 | 341 | 867 | (2,233) | 1,185 | (2,227) | 1,405 |
Total other comprehensive income (loss), net of tax | 960 | (4,285) | (5,593) | (5,191) | (408) | (630) | 1,718 | (3,170) |  |  |  |  | (14,109) | (2,490) |
Balance | 4,101 | 2,217 | 9,188 | 14,712 | 20,272 | 21,170 | 21,745 | 19,593 | 9,188 | 21,745 | 2,217 | 21,170 | 4,101 | 20,272 |
As Previously Reported [Member] | Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 986 |  |  |  |  |  |  |  |  |  |  |  | 986 |  |
As Previously Reported [Member] | Preferred Stock [Member] | Series C Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | 493 |  |
As Previously Reported [Member] | Preferred Stock [Member] | Series D Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | 493 |  |
As Previously Reported [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 4,534 | 4,546 | 4,586 | 4,735 | 4,956 | 5,021 | 5,057 | 5,082 | 4,735 | 5,082 | 4,735 | 5,082 | 4,735 | 5,082 |
Stock compensation/issued for benefit plans |  | 15 | 9 | 6 |  | 16 | 23 | 25 |  |  |  |  | 40 | 85 |
Retirement of common stock/cancellation of shares |  | (27) | (49) | (155) |  | (81) | (59) | (50) |  |  |  |  | (231) | (432) |
Balance | 4,544 | 4,534 | 4,546 | 4,586 | 4,735 | 4,956 | 5,021 | 5,057 | 4,546 | 5,021 | 4,534 | 4,956 | 4,544 | 4,735 | 5,082
As Previously Reported [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 6,311 | 8,985 | 8,876 | 9,096 | 9,365 | 9,245 | 8,775 | 8,686 | 9,096 | 8,686 | 9,096 | 8,686 | 9,096 | 8,686 |
Net income (loss) |  | (2,574) | 238 | 104 |  | 318 | 642 | 225 |  |  |  |  | (2,227) | 1,405 |
Retirement of common stock/cancellation of shares |  | (23) | (51) | (245) |  | (119) | (91) | (55) |  |  |  |  | (319) | (673) |
Common stock dividends declared |  | (77) | (78) | (79) |  | (79) | (81) | (81) |  |  |  |  | (311) | (322) |
Balance | 6,239 | 6,311 | 8,985 | 8,876 | 9,096 | 9,365 | 9,245 | 8,775 | 8,985 | 9,245 | 6,311 | 9,365 | 6,239 | 9,096 | 8,686
As Previously Reported [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | (8,628) | (4,343) | 1,250 | 6,441 | 6,849 | 7,479 | 5,761 | 8,931 | 6,441 | 8,931 | 6,441 | 8,931 | 6,441 | 8,931 |
Total other comprehensive income (loss), net of tax |  | (4,285) | (5,593) | (5,191) |  | (630) | 1,718 | (3,170) |  |  |  |  | (14,109) | (2,490) |
Balance | (7,668) | (8,628) | (4,343) | 1,250 | 6,441 | 6,849 | 7,479 | 5,761 | (4,343) | 7,479 | (8,628) | 6,849 | (7,668) | 6,441 | $ 8,931
Restatement Impacts [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 451 | 466 | 472 | 482 | (5) | (3) | (6) |  | 482 |  | 482 |  | 482 |  |
Net income (loss) | 16 | (9) | (10) | (12) | 488 | (2) | 3 | (6) | (22) | (3) | (31) | (5) | (14) | 482 |
Total other comprehensive income (loss), net of tax |  | (6) | 4 | 2 |  |  |  |  |  |  |  |  |  |  |
Balance | 468 | 451 | 466 | 472 | 482 | (5) | (3) | (6) | 466 | (3) | 451 | (5) | 468 | 482 |
Restatement Impacts [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | 451 | 460 | 470 | 482 | (5) | (3) | (6) |  | 482 |  | 482 |  | 482 |  |
Net income (loss) |  | (9) | (10) | (12) |  | (2) | 3 | (6) |  |  |  |  | (14) | 482 |
Balance | $ 468 | 451 | 460 | 470 | $ 482 | $ (5) | $ (3) | $ (6) | 460 | $ (3) | $ 451 | $ (5) | $ 468 | $ 482 |
Restatement Impacts [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance |  | 6 | 2 |  |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income (loss), net of tax |  | $ (6) | 4 | 2 |  |  |  |  |  |  |  |  |  |  |
Balance |  |  | $ 6 | $ 2 |  |  |  |  | $ 6 |  |  |  |  |  |

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