Goodwill - Additional Information (Detail) - USD ($) |
12 Months Ended | |||
|---|---|---|---|---|
May 10, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Goodwill [Line Items] | ||||
| Acquisitions | $ 1,044,000,000 | $ 316,000,000 | ||
| Impairment of goodwill | $ 0 | 0 | $ 0 | |
| Closing market price of common stock | $ 502.70 | |||
| Book value per share | $ 216.15 | |||
| eFront [Member] | ||||
| Goodwill [Line Items] | ||||
| Acquisitions | $ 1,044,000,000 | |||
| Total cash consideration paid for acquisitions | $ 1,555,000,000 | |||
| Citibanamex [Member] | ||||
| Goodwill [Line Items] | ||||
| Acquisitions | 132,000,000 | |||
| Total consideration at closing for acquisitions | 360,000,000 | |||
| Tennenbaum Capital Partners, LLC [Member] | ||||
| Goodwill [Line Items] | ||||
| Acquisitions | 184,000,000 | |||
| Total cash consideration paid for acquisitions | $ 393,000,000 | |||