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Financing Arrangements - 2025 Term Loan - Additional Information (Detail) - Term Loan [Member] - Term Loan, Matures January 2025 [Member] - USD ($)
3 Months Ended 12 Months Ended
Jan. 02, 2018
Dec. 31, 2018
Dec. 31, 2017
Sep. 30, 2018
Debt Instrument [Line Items]        
Long-term line of credit $ 970,000,000 $ 932,102,000 [1]   $ 930,726,000 [1]
Debt Instrument, Frequency of Periodic Payment   quarterly    
Debt Instrument, Periodic Payment $ 2,400,000      
Debt instrument maturity date Jan. 02, 2025 Jan. 02, 2025 Jan. 02, 2025 Jan. 02, 2025
Unamortized debt issuance costs   $ 33,000,000    
[1] Interest rate of 4.77% and 4.53% as of December 31, 2018 and September 30, 2018, respectively.