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Schedule I—Condensed Financial Information of Registrant (Parent Company Only) (Condensed Statements Of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Net income | $ 793 | $ 699 | $ 415
Deferred income taxes | 147 | 27 | 15
Gain on remeasurement of Tax Receivable Agreement liability | (93) |  |
Net cash provided by operating activities | 142 | 544 | 725
Net cash used in investing activities | (26) | (6) | (35)
Net cash used in financing activities | (374) | (189) | (295)
Effect of exchange rate changes on cash and cash equivalents | 65 | (25) | (63)
Net increase (decrease) in cash and cash equivalents | (193) | 324 | 332
Cash and cash equivalents at beginning of period | 1,925 | 1,601 | 1,269
Cash and cash equivalents at end of period | 1,732 | 1,925 | 1,601
Cash paid for interest | 209 | 77 | 68
Cash paid for taxes, net | 47 | 29 | 31
Parent Company [Member] |  |  |
Net income | 76 | 84 | 49
Undistributed gains of subsidiaries, net | (147) | (117) | (67)
Deferred income taxes | 149 | 30 | 13
Gain on remeasurement of Tax Receivable Agreement liability | (93) |  |
Changes in operating assets and liabilities | (9) | 9 | 9
Net cash provided by operating activities | (24) | 6 | 4
Net cash used in investing activities | 56 | 42 | 40
Net cash used in financing activities | (43) | (44) | (34)
Effect of exchange rate changes on cash and cash equivalents | 11 | (5) | (10)
Net increase (decrease) in cash and cash equivalents |  | (1) |
Cash and cash equivalents at beginning of period |  | 1 | 1
Cash and cash equivalents at end of period |  |  | $ 1
Cash paid for taxes, net | $ 13 | (1) |
Non Cash Distribution From Subsidiaries |  | $ 1 |

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