Schedule of Estimated Fair Value (Detail) - USD ($) $ in Thousands	Dec. 29, 2019	Dec. 30, 2018
2015 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 774,000	$ 780,000
Fair Value	804,960	783,120
2017 Five-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	588,000	592,500
Fair Value	588,588	575,910
2017 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	980,000	987,500
Fair Value	1,017,240	956,888
2017 Five-Year Floating Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	294,000	296,250
Fair Value	294,000	295,065
2018 7.5-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	419,688	422,875
Fair Value	431,439	416,955
2018 9.25-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	395,000	398,000
Fair Value	414,355	$ 396,010
2019 Ten-Year Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal Amount	675,000
Fair Value	$ 675,675