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Revenue from Contracts with Customers - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Contract assets	$ 412,400	$ 381,800
Contract assets, current	295,403	307,020
Contract liabilities	126,000	92,500
Contract liabilities, current	115,137	$ 82,227
Recognized revenue included in contract liability	$ 61,800

X

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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