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v3.19.1

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] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Cumulative Foreign Currency Translation Adjustment [Member] | Postretirement Benefit Liability Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Cumulative effect of adoption of accounting guidance |  |  |  |  | $ 409 | $ (416) |  |  |
Balance - beginning of period at Dec. 31, 2017 |  | $ 11,121 | $ (1,944) | $ 13,978 | 27,883 | 1,034 | $ (1,187) | $ 280 |
Balance - beginning of period (Previous Accounting Guidance [Member]) at Dec. 31, 2017 |  |  |  |  | 27,474 | 1,450 |  |  |
Common Shares repurchased |  |  | 0 |  |  |  |  |  |
Net shares redeemed under employee share-based compensation plans |  |  | 217 | (262) |  |  |  |  |
Exercise of stock options |  |  |  | (16) |  |  |  |  |
Share-based compensation expense |  |  |  | 62 |  |  |  |  |
Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings |  |  |  | (332) |  |  |  |  |
Net income (loss) | $ 1,082 |  |  |  | 1,082 |  |  |  |
Funding of dividends declared from Additional paid-in capital |  |  |  |  | 332 |  |  |  |
Dividends declared on Common Shares |  |  |  |  | (332) |  |  |  |
Change in period, before reclassification from AOCI, net of income tax benefit (expense) of $(324) and $226 |  |  |  |  |  | (1,008) |  |  |
Amounts reclassified from AOCI, net of income tax expense of $(6) and $(3) |  |  |  |  |  | 20 |  |  |
Change in period, net of income tax benefit (expense) of $(330) and $223 |  |  |  |  |  | (988) |  |  |
Change in period, net of income tax expense of $(7) and $(19) |  |  |  |  |  |  | 378 |  |
Change in period, net of income tax benefit of $6 and $4 |  |  |  |  |  |  |  | (19) |
Balance - end of period at Mar. 31, 2018 | 51,287 | 11,121 | (1,727) | 13,430 | 28,965 | 46 | (809) | 261 | $ (502)
Cumulative effect of adoption of accounting guidance |  |  |  |  |  | 0 |  |  |
Cumulative effect of adoption of accounting guidance | Accounting Standards Update 2017-08 [Member] |  |  |  |  | (12) |  |  |  |
Balance - beginning of period at Dec. 31, 2018 | 50,312 | 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 | (545) |  |  |
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 benefit (expense) of $(324) and $226 |  |  |  |  |  | 1,521 |  |  |
Amounts reclassified from AOCI, net of income tax expense of $(6) and $(3) |  |  |  |  |  | 38 |  |  |
Change in period, net of income tax benefit (expense) of $(330) and $223 |  |  |  |  |  | 1,559 |  |  |
Change in period, net of income tax expense of $(7) and $(19) |  |  |  |  |  |  | 140 |  |
Change in period, net of income tax benefit of $6 and $4 |  |  |  |  |  |  |  | (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)

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