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Share Owners' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013 | Sep. 30, 2014 Maximum | Sep. 30, 2013 Maximum | Sep. 30, 2014 Common Stock | Jun. 30, 2014 Common Stock | Dec. 31, 2013 Common Stock | Sep. 30, 2013 Common Stock | Jun. 30, 2013 Common Stock | Dec. 31, 2012 Common Stock | Sep. 30, 2014 Capital in Excess of Par Value | Sep. 30, 2013 Capital in Excess of Par Value | Sep. 30, 2014 Capital in Excess of Par Value | Sep. 30, 2013 Capital in Excess of Par Value | Sep. 30, 2014 Treasury Stock | Sep. 30, 2013 Treasury Stock | Sep. 30, 2014 Treasury Stock | Sep. 30, 2013 Treasury Stock | Sep. 30, 2014 Retained Earnings (Loss) | Sep. 30, 2013 Retained Earnings (Loss) | Sep. 30, 2014 Retained Earnings (Loss) | Sep. 30, 2013 Retained Earnings (Loss) | Sep. 30, 2014 Accumulated Other Comprehensive Loss | Sep. 30, 2013 Accumulated Other Comprehensive Loss | Sep. 30, 2014 Accumulated Other Comprehensive Loss | Sep. 30, 2013 Accumulated Other Comprehensive Loss | Sep. 30, 2014 Non-controlling Interests | Sep. 30, 2013 Non-controlling Interests | Sep. 30, 2014 Non-controlling Interests | Sep. 30, 2013 Non-controlling Interests
Increase (Decrease) in Share Owners' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ 1,922 | $ 1,194 | $ 1,603 | $ 1,055 |  |  |  | $ 2 | $ 2 | $ 2 | $ 2 | $ 2 | $ 2 | $ 3,059 | $ 3,018 | $ 3,040 | $ 3,005 | $ (463) | $ (433) | $ (454) | $ (425) | $ 204 | $ 6 | $ (11) | $ (195) | $ (1,002) | $ (1,559) | $ (1,121) | $ (1,506) | $ 122 | $ 160 | $ 147 | $ 174
Issuance of common stock |  | 15 | 5 | 22 |  |  |  |  |  |  |  |  |  |  | 15 | 5 | 22 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reissuance of common stock | 1 | 1 | 4 | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1 | 4 | 3 |  |  |  |  |  |  |  |  |  |  |  |
Treasury shares purchased |  | (10) | (12) | (20) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10) | (12) | (20) |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of exchangeable notes |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation | 3 | 1 | 17 | 8 |  |  |  |  |  |  |  |  |  | 3 | 1 | 17 | 8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | 67 | 136 | 293 | 347 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 | 130 | 275 | 331 |  |  |  |  | 7 | 6 | 18 | 16
Other comprehensive income (loss) | (168) | 39 | (50) | (20) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (165) | 39 | (46) | (14) |  |  |  |
Other comprehensive income (loss) | (165) | 39 | (46) | (14) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (165) | 39 | (46) | (14) | (3) |  | (4) | (6)
Distributions to noncontrolling interests |  | 1 | (37) | (21) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | (37) | (21)
Contributions from noncontrolling interests | (2) |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2) |  |  | 4
Balance at end of period | 1,823 | 1,377 | 1,823 | 1,377 |  |  |  | 2 | 2 | 2 | 2 | 2 | 2 | 3,062 | 3,034 | 3,062 | 3,034 | (462) | (442) | (462) | (442) | 264 | 136 | 264 | 136 | (1,167) | (1,520) | (1,167) | (1,520) | 124 | 167 | 124 | 167
Issuance of common stock (in shares) | 13,253 | 855,261 | 226,795 | 1,285,826 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reissuance of common stock (in shares) | 52,167 | 61,187 | 149,234 | 159,111 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury shares purchased, shares |  | 335,245 | 364,436 | 683,534 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of common stock |  |  |  |  |  | $ 100 | $ 75 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized | 250,000,000 |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ 0.01 |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock issued (including treasury shares) | 183,911,000 | 183,371,000 | 183,911,000 | 183,371,000 | 183,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury shares | 19,001,000 | 18,426,000 | 19,001,000 | 18,426,000 | 18,786,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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