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v3.20.1

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] | 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, 2018 |  | $ 11,121 | $ (2,618) | $ 12,557 | $ 31,688 | $ (545) | $ (1,976) | $ 73 |
Balance - beginning of period (Previous Accounting Guidance [Member]) at Dec. 31, 2018 |  |  |  |  | 31,700 |  |  |  |
Balance - beginning of period (Accounting Standards Update 2017-08 [Member]) at Dec. 31, 2018 |  |  |  |  | (12) |  |  |  |
Common Shares repurchased |  |  | (367) |  |  |  |  |  |
Net shares redeemed under employee share-based compensation plans |  |  | 210 | (191) |  |  |  |  |
Exercise of stock options |  |  |  | (34) |  |  |  |  |
Share-based compensation expense |  |  |  | 54 |  |  |  |  |
Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings |  |  |  | (335) |  |  |  |  |
Net income (loss) | $ 1,040 |  |  |  | 1,040 |  |  |  |
Funding of dividends declared from Additional paid-in capital |  |  |  |  | (335) |  |  |  |
Dividends declared on Common Shares |  |  |  |  | (335) |  |  |  |
Change in period, before reclassification from AOCI, net of income tax (expense) benefit of $324 and $(324) |  |  |  |  |  | 1,521 |  |  |
Amounts reclassified from AOCI, net of income tax expense of $(40) and $(6) |  |  |  |  |  | 38 |  |  |
Change in period, net of income tax (expense) benefit of $284 and $(330) |  |  |  |  |  | 1,559 |  |  |
Change in period, net of income tax (expense) benefit of $34 and $(7) |  |  |  |  |  |  | 140 |  |
Change in period, net of income tax benefit of $3 and $6 |  |  |  |  |  |  |  | (21) |
Balance - end of period at Mar. 31, 2019 | 52,355 | 11,121 | (2,775) | 12,051 | 32,728 | 1,014 | (1,836) | 52 | $ (770)
Balance - beginning of period at Dec. 31, 2019 | 55,331 | 11,121 | (3,754) | 11,203 | 36,079 | 2,543 | (1,939) | 15 |
Balance - beginning of period (Previous Accounting Guidance [Member]) at Dec. 31, 2019 |  |  |  |  | 36,142 |  |  |  |
Balance - beginning of period (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019 |  |  |  |  | (63) |  |  |  |
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 (expense) benefit of $324 and $(324) |  |  |  |  |  | (2,155) |  |  |
Amounts reclassified from AOCI, net of income tax expense of $(40) and $(6) |  |  |  |  |  | 279 |  |  |
Change in period, net of income tax (expense) benefit of $284 and $(330) |  |  |  |  |  | (1,876) |  |  |
Change in period, net of income tax (expense) benefit of $34 and $(7) |  |  |  |  |  |  | (825) |  |
Change in period, net of income tax benefit of $3 and $6 |  |  |  |  |  |  |  | (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)
Balance - end of period (Accounting Standards Update 2016-13 [Member]) at Mar. 31, 2020 |  |  |  |  | $ (63) |  |  |  |

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