Schedule of Estimated Fair Value (Detail) - USD ($) $ in Thousands	Jun. 18, 2023	Jan. 01, 2023
2015 Ten-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 748,000	$ 752,000
Fair Value	715,088	717,408
2017 Ten-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	947,500	952,500
Fair Value	878,333	875,348
2018 7.5-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	405,875	408,000
Fair Value	384,770	385,968
2018 9.25-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	382,000	384,000
Fair Value	357,170	355,584
2019 Ten-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	653,063	656,438
Fair Value	572,736	564,536
2021 7.5-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	833,000	837,250
Fair Value	706,384	695,755
2021 Ten-Year Notes [Member]
Debt Instrument [Line Items]
Principal Amount	980,000	985,000
Fair Value	$ 803,600	$ 792,925