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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract] |
Future Minimum Lease Commitments Under Noncancellable Operating Leases | Future minimum lease commitments under noncancellable operating leases with initial or remaining terms of one year or more as of December 31, 2018, are payable as follows (in millions):
2019 |  |  | 32 |
2020 |  |  | 25 |
2021 |  |  | 17 |
2022 |  |  | 9 |
2023 |  |  | 6 |
Thereafter |  |  | 5 |
Total future lease commitments |  | $ | 94 |

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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