Acquisition - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
May 10, 2019 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Business Acquisition [Line Items] | |||||
| Amortization of intangible assets | $ 25 | $ 11 | $ 40 | $ 22 | |
| Revenue | 3,524 | $ 3,605 | 6,870 | $ 7,188 | |
| eFront [Member] | |||||
| Business Acquisition [Line Items] | |||||
| Business acquisition, percentage of equity interest acquired | 100.00% | ||||
| Business acquisition purchase price, excluding settlement of debt | $ 1,300 | ||||
| Amortization of intangible assets | 10 | $ 10 | |||
| Finite-lived intangible assets had a weighted-average remaining useful life | 10 years | ||||
| Revenue | $ 22 | $ 22 | |||
| eFront [Member] | Minimum [Member] | |||||
| Business Acquisition [Line Items] | |||||
| Finite-lived intangible asset, useful life | 5 years | ||||
| eFront [Member] | Maximum [Member] | |||||
| Business Acquisition [Line Items] | |||||
| Finite-lived intangible asset, useful life | 11 years | ||||