Goodwill - Additional Information (Detail) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Aug. 08, 2016 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Goodwill [Line Items] | |||
| Goodwill impairment charges | $ 0 | $ 0 | |
| Purchase price allocation to goodwill | $ 14,000,000 | $ 7,464,000,000 | |
| Other Acquisition [Member] | |||
| Goodwill [Line Items] | |||
| Payments to acquire business | $ 200,000,000 | ||
| Purchase price allocation to goodwill | $ 14,000,000 | ||
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|