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Earnings per Share (Unaudited) Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Earnings Per Share [Abstract] |  |  |  |
Net income (loss) from continuing operations | $ 242 | $ 292 | $ 836 | $ (4,034)
Net loss (income) from continuing operations attributable to noncontrolling interests | (35) | 37 | 106 | 146
Preferred dividends on redeemable noncontrolling interest | 0 | 10 | 0 | 31
Undistributed earnings allocated to participating securities | 3 | 3 | 3 | 3
Net income (loss) from continuing operations attributable to common stockholders | 274 | 242 | 727 | (4,214)
Net income (loss) from discontinued operations | 3 | (6) | 50 | (191)
Net income from discontinued operations attributable to noncontrolling interests | 0 | 22 | 4 | 44
Net income (loss) from discontinued operations attributable to common stockholders | 3 | (28) | 46 | (235)
Net income (loss) attributable to common stockholders | $ 277 | $ 214 | $ 773 | $ (4,449)
Basic | 1,448 | 1,346 | 1,447 | 1,289
Add shares issuable upon exercise or vesting of dilutive stock options and restricted stock units | 6 | 5 | 6 | 0
Diluted weighted-average shares of common stock outstanding | 1,454 | 1,351 | 1,453 | 1,289
Basic and diluted net income (loss) per share attributable to common stockholders |  |  |  |
Continuing operations | $ 0.19 | $ 0.18 | $ 0.50 | $ (3.27)
Discontinued operations | 0.00 | (0.02) | 0.03 | (0.18)
Basic and diluted net income (loss) per share attributable to common stockholders: | $ 0.19 | $ 0.16 | $ 0.53 | $ (3.45)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  |  | 12
Dilutive Securities Excluded from Computation of EPS Amount | 38 | 46 | 42 | 46

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4613673-111683 + Details
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- Definition Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 + Details
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