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Goodwill and Intangible Assets, Net - Components of Intangible Assets with Definite Lives (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 4 years 4 months 24 days |
Gross Carrying Amount | $ 253 | $ 228
Accumulated Amortization | (173) | (140)
Intangible assets with definite lives, net | $ 80 | 88
Trade Names and Trademarks |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 4 years 6 months |
Gross Carrying Amount | $ 59 | 57
Accumulated Amortization | (35) | (28)
Intangible assets with definite lives, net | $ 24 | 29
Customer Lists and Supplier Relationships |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 4 years 4 months 24 days |
Gross Carrying Amount | $ 98 | 88
Accumulated Amortization | (65) | (53)
Intangible assets with definite lives, net | $ 33 | 35
Subscriber Relationships |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 3 years 3 months 18 days |
Gross Carrying Amount | $ 40 | 34
Accumulated Amortization | (29) | (25)
Intangible assets with definite lives, net | $ 11 | 9
Technology and Other |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 5 years 1 month 6 days |
Gross Carrying Amount | $ 56 | 49
Accumulated Amortization | (44) | (34)
Intangible assets with definite lives, net | $ 12 | $ 15

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