Business Segment Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019 USD ($)	Sep. 29, 2018 USD ($)	Sep. 28, 2019 USD ($)	Sep. 29, 2018 USD ($)	Dec. 29, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments			3
Net sales:
Net sales	$ 1,866,967	$ 1,848,707	$ 5,215,918	$ 5,035,654
Segment operating profit:
Total operating profit	269,756	256,889	651,811	623,010
General corporate expenses	47,269	46,161	160,722	136,694
Acquisition, integration and other action-related charges	9,937	20,732	43,919	65,514
Amortization of intangibles	8,630	10,091	26,230	28,404
Other expenses	(8,066)	(7,285)	(23,766)	(19,616)
Interest expense, net	43,091	52,795	137,672	146,988
Income before income tax expense	218,599	196,809	490,373	456,406
Other Employee Related Liabilities	11,517		11,517		$ 10,806
Employee termination and other benefits paid			11,681
Employee termination and other benefits			12,392
Innerwear
Net sales:
Net sales	578,453	599,726	1,733,002	1,785,498
Segment operating profit:
Total operating profit	121,467	132,244	375,623	392,792
Activewear
Net sales:
Net sales	548,117	554,953	1,401,734	1,306,863
Segment operating profit:
Total operating profit	97,314	93,605	209,686	189,400
International
Net sales:
Net sales	663,525	619,435	1,878,568	1,735,184
Segment operating profit:
Total operating profit	107,168	99,624	280,944	253,243
Total segment operating profit
Segment operating profit:
Total operating profit	335,592	333,873	882,682	853,622
Accrued liabilities
Segment operating profit:
Other Employee Related Liabilities	9,548		9,548
Other Noncurrent Liabilities
Segment operating profit:
Other Employee Related Liabilities	1,969		1,969
Total
Segment operating profit:
Acquisition, integration and other action-related charges	9,937	20,732	43,919	65,514
Cost of Sales
Segment operating profit:
Acquisition, integration and other action-related charges	9,424	11,760	39,714	33,596
Employee termination and other benefits			9,720
Selling, General and Administrative Expenses
Segment operating profit:
Acquisition, integration and other action-related charges	513	8,972	4,205	31,918
Employee termination and other benefits			2,672
Corporate, Non-Segment
Net sales:
Net sales	76,872	74,593	202,614	208,109
Segment operating profit:
Total operating profit	$ 9,643	$ 8,400	$ 16,429	$ 18,187