|
Acquisitions - Allocation of Purchase Price (Detail) (USD $)
|
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Business Acquisition [Line Items] | ||
| Goodwill | $ 1,449,822,000 | $ 1,451,887,000 |
| Alifabs Group [Member] | ||
| Business Acquisition [Line Items] | ||
| Cash and cash equivalents | 2,100,000 | |
| Other current assets | 15,700,000 | |
| Identifiable intangible assets | 26,900,000 | |
| Goodwill | 15,300,000 | |
| Other noncurrent assets | 600,000 | |
| Less: Liabilities assumed | (11,800,000) | |
| Net acquisition cost | $ 48,800,000 |