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v3.21.1

Consolidated Statements Of Shareholders' Equity - USD ($) $ in Millions | Total | Common Stock [Member] | Common shares in treasury [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjusted Balance | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] | Cumulative Foreign Currency Translation Adjustment [Member] | Postretirement Benefit Liability Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance - beginning of period at Dec. 31, 2019 |  | $ 11,121 | $ (3,754) | $ 11,203 | $ 36,142 | $ (63) | $ 36,079 | $ 2,543 | $ (1,939) | $ 15 |
Common Shares repurchased |  |  | (326) |  |  |  |  |  |  |  |
Net shares redeemed under employee share-based compensation plans |  |  | 208 | (196) |  |  |  |  |  |  |
Exercise of stock options |  |  |  | (26) |  |  |  |  |  |  |
Share-based compensation expense |  |  |  | 69 |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings |  |  |  | (340) |  |  |  |  |  |  |
Net income (loss) | $ 252 |  |  |  | 252 |  |  |  |  |  |
Funding of dividends declared from Additional paid-in capital |  |  |  |  | 340 |  |  |  |  |  |
Dividends declared on Common Shares |  |  |  |  | (340) |  |  |  |  |  |
Change in period, before reclassification from AOCI, net of income tax benefit of $401 and $324 |  |  |  |  |  |  |  | (2,155) |  |  |
Amounts reclassified from AOCI, net of income tax (expense) benefit of $4 and $(40) |  |  |  |  |  |  |  | 279 |  |  |
Change in period, net of income tax benefit of $405 and $284 |  |  |  |  |  |  |  | (1,876) |  |  |
Change in period, net of income tax benefit of $2 and $34 |  |  |  |  |  |  |  |  | (825) |  |
Change in period, net of income tax benefit of $5 and $3 |  |  |  |  |  |  |  |  |  | (11) |
Balance - end of period at Mar. 31, 2020 | 52,197 | 11,121 | (3,872) | 10,710 | 36,331 |  |  | 667 | (2,764) | 4 | $ (2,093)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | (40) |  |  |  |  |  |  | (40) |  |  |
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax |  |  |  |  |  |  |  | 284 |  |  |
OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax |  |  |  |  |  |  |  | 324 |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax |  |  |  |  |  |  |  |  | 34 |  |
Pension liability adjustment, Change in period, income tax (expense) benefit |  |  |  |  |  |  |  |  |  | 3 |
Balance - beginning of period at Dec. 31, 2020 | 59,441 | 11,064 | (3,644) | 9,815 | 39,337 | $ 0 | $ 39,337 | 4,673 | (1,637) | (167) |
Common Shares repurchased |  |  | (519) |  |  |  |  |  |  |  |
Net shares redeemed under employee share-based compensation plans |  |  | 262 | (187) |  |  |  |  |  |  |
Exercise of stock options |  |  |  | (24) |  |  |  |  |  |  |
Share-based compensation expense |  |  |  | 66 |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings |  |  |  | (352) |  |  |  |  |  |  |
Net income (loss) | 2,300 |  |  |  | 2,300 |  |  |  |  |  |
Funding of dividends declared from Additional paid-in capital |  |  |  |  | 352 |  |  |  |  |  |
Dividends declared on Common Shares |  |  |  |  | (352) |  |  |  |  |  |
Change in period, before reclassification from AOCI, net of income tax benefit of $401 and $324 |  |  |  |  |  |  |  | (1,892) |  |  |
Amounts reclassified from AOCI, net of income tax (expense) benefit of $4 and $(40) |  |  |  |  |  |  |  | (20) |  |  |
Change in period, net of income tax benefit of $405 and $284 |  |  |  |  |  |  |  | (1,912) |  |  |
Change in period, net of income tax benefit of $2 and $34 |  |  |  |  |  |  |  |  | 24 |  |
Change in period, net of income tax benefit of $5 and $3 |  |  |  |  |  |  |  |  |  | (23) |
Balance - end of period at Mar. 31, 2021 | 59,076 | $ 11,064 | $ (3,901) | $ 9,318 | $ 41,637 |  |  | 2,761 | (1,613) | (190) | $ 958
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | $ 4 |  |  |  |  |  |  | 4 |  |  |
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax |  |  |  |  |  |  |  | 405 |  |  |
OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax |  |  |  |  |  |  |  | $ 401 |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax |  |  |  |  |  |  |  |  | $ 2 |  |
Pension liability adjustment, Change in period, income tax (expense) benefit |  |  |  |  |  |  |  |  |  | $ 5 |
Accounting Standards Update [Extensible List] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |  |  |  |  |

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