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Consolidated Statement of Changes in Equity (Unaudited) - USD ($) $ in Millions | Total | Total | Common Shares | Common Stock and Capital Surplus | Retained Earnings Approp. | Retained Earnings Unapprop. | Accumulated Other Comprehensive Inc. (Loss) | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Cumulative effect of accounting change for variable interest entities | $ 2 | $ 2 |  |  | $ 2 |  |  |
Beginning Balance, shares at Dec. 31, 2014 |  |  | 87,708,793 |  |  |  |  |
Beginning Balance at Dec. 31, 2014 | 5,054 | 4,879 |  | $ 1,240 | (2) | $ 2,914 | $ 727 | $ 175
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net earnings | 25 | 19 |  |  |  | 19 |  | 6
Other comprehensive income (loss) | 50 | 49 |  |  |  |  | 49 | 1
Dividends on Common Stock | (22) | (22) |  |  |  | (22) |  |
Shares issued: |  |  |  |  |  |  |  |
Restricted stock awards, shares |  |  | 171,130 |  |  |  |  |
Restricted stock awards | 0 | 0 |  | 0 |  |  |  |
Exercise of stock options, shares |  |  | 489,001 |  |  |  |  |
Exercise of stock options | 17 | 17 |  | 17 |  |  |  |
Other benefit plans, shares |  |  | 62,094 |  |  |  |  |
Other benefit plans | 4 | 4 |  | 4 |  |  |  |
Dividend reinvestment plan, shares |  |  | 3,606 |  |  |  |  |
Stock-based compensation: |  |  |  |  |  |  |  |
Stock-based compensation: Expense | 5 | 5 |  | 5 |  |  |  |
Stock-based compensation: Excess tax benefits | 3 | 3 |  | 3 |  |  |  |
Shares acquired and retired, shares |  |  | (516,276) |  |  |  |  |
Shares acquired and retired | (31) | (31) |  | (8) |  | (23) |  |
Shares exchanged - benefit plans, shares |  |  | (32,633) |  |  |  |  |
Shares exchanged - benefit plans | (2) | (2) |  |  |  | (2) |  |
Other | (5) |  |  |  |  |  |  | (5)
Ending Balance, shares at Mar. 31, 2015 |  |  | 87,885,715 |  |  |  |  |
Ending Balance at Mar. 31, 2015 | $ 5,100 | 4,923 |  | 1,261 | 0 | 2,886 | 776 | 177
Beginning Balance, shares at Dec. 31, 2015 | 87,474,452 |  | 87,474,452 |  |  |  |  |
Beginning Balance at Dec. 31, 2015 | $ 4,770 | 4,592 |  | 1,301 | 0 | 2,987 | 304 | 178
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net earnings | 104 | 101 |  |  |  | 101 |  | 3
Other comprehensive income (loss) | 146 | 144 |  |  |  |  | 144 | 2
Dividends on Common Stock | (24) | (24) |  |  |  | (24) |  |
Shares issued: |  |  |  |  |  |  |  |
Restricted stock awards, shares |  |  | 317,230 |  |  |  |  |
Restricted stock awards | 0 | 0 |  | 0 |  |  |  |
Exercise of stock options, shares |  |  | 279,165 |  |  |  |  |
Exercise of stock options | 10 | 10 |  | 10 |  |  |  |
Other benefit plans, shares |  |  | 47,566 |  |  |  |  |
Other benefit plans | 3 | 3 |  | 3 |  |  |  |
Dividend reinvestment plan, shares |  |  | 3,736 |  |  |  |  |
Dividend reinvestment plan | 0 | 0 |  | 0 |  |  |  |
Stock-based compensation: |  |  |  |  |  |  |  |
Stock-based compensation: Expense | 5 | 5 |  | 5 |  |  |  |
Stock-based compensation: Excess tax benefits | 2 | 2 |  | 2 |  |  |  |
Shares acquired and retired, shares |  |  | (1,128,128) |  |  |  |  |
Shares acquired and retired | (76) | (76) |  | (16) |  | (60) |  |
Shares exchanged - benefit plans, shares |  |  | (27,551) |  |  |  |  |
Shares exchanged - benefit plans | (2) | (2) |  |  |  | (2) |  |
Forfeitures of restricted stock, shares |  |  | (180) |  |  |  |  |
Forfeitures of restricted stock | 0 | 0 |  | 0 |  |  |  |
Other | $ (1) |  |  |  |  |  |  | (1)
Ending Balance, shares at Mar. 31, 2016 | 86,966,290 |  | 86,966,290 |  |  |  |  |
Ending Balance at Mar. 31, 2016 | $ 4,937 | $ 4,755 |  | $ 1,305 | $ 0 | $ 3,002 | $ 448 | $ 182

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Data Type: | na
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