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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Accounting Policies [Abstract] |
Changes in Carrying Amount of Service and Product Warranties | The changes in the carrying amount of service and product warranties are as follows (in millions):
Balance at December 31, 2016 |  | $ | 172 |
Net provisions for warranties issued during the year |  |  | 46 |
Amounts incurred |  |  | (86 | )
Currency translation adjustments |  |  | 3 |
Balance at December 31, 2017 |  | $ | 135 |
Net provisions for warranties issued during the year |  |  | 38 |
Amounts incurred |  |  | (67 | )
Currency translation adjustments |  |  | (1 | )
Balance at December 31, 2018 |  | $ | 105 |
Computation of Weighted Average Basic and Diluted Shares Outstanding | The following table sets forth the computation of weighted average basic and diluted shares outstanding (in millions, except per share data):
|  | Years Ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to Company |  | $ | (31 | ) |  | $ | (237 | ) |  | $ | (2,412 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Basic—weighted average common shares outstanding |  |  | 378 |  |  |  | 377 |  |  |  | 376 |
Dilutive effect of employee stock options and other unvested stock awards |  |  | — |  |  |  | — |  |  |  | — |
Diluted outstanding shares |  |  | 378 |  |  |  | 377 |  |  |  | 376 |
Basic loss attributable to Company per share |  | $ | (0.08 | ) |  | $ | (0.63 | ) |  | $ | (6.41 | )
Diluted loss attributable to Company per share |  | $ | (0.08 | ) |  | $ | (0.63 | ) |  | $ | (6.41 | )
Cash dividends per share |  | $ | 0.20 |  |  | $ | 0.20 |  |  | $ | 0.61 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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