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Revenue - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jul. 01, 2018
Jun. 30, 2019
Jul. 01, 2018
Revenue recognized in accordance with ASC 606 $ 564,178 $ 526,929 $ 1,058,277 $ 1,014,396
Revenue on leases 1,700 3,600 3,400 7,900
Deferred Revenue And Customer Advances 13,300 24,700 33,400 46,500
Trade Accounts Receivable $ 82,100 $ 8,900 $ 82,100 8,900
Short-term Contract with Customer [Member]        
Revenue, Remaining Performance Obligation, Percentage 72.00%   72.00%  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Period     12 months  
Long-term Contract with Customer [Member]        
Revenue, Remaining Performance Obligation, Percentage 22.00%   22.00%  
Long-term Contract with Customer [Member] | Maximum [Member]        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Period     3 years  
Long-term Contract with Customer [Member] | Minimum [Member]        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Period     1 year  
Accounting Standards Update 2014-09 [Member]        
Revenue recognized in accordance with ASC 606 $ 562,500   $ 1,054,900 $ 1,006,500