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Recently Issued Accounting Pronouncements - Additional Information (Detail) - ASU 2014-09 - Software Licenses - Subsequent Event	Jan. 01, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings adjustment	$ 12,000,000
Income tax expense	(3,000,000)
Sales
New Accounting Pronouncements or Change in Accounting Principle
Effect of Change in Accounting Principle	16,000,000
Cost of revenues | Maximum
New Accounting Pronouncements or Change in Accounting Principle
Effect of Change in Accounting Principle	$ (1,000,000)

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