Condensed Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 926,328	$ 871,023	$ 1,862,350	$ 1,851,231
Cost of goods sold	459,099	441,266	924,397	946,626
Gross profit	467,229	429,757	937,953	904,605
Selling, general and administrative expenses	391,087	383,299	757,257	761,228
Restructuring	631	3,193	863	5,725
Operating earnings	75,511	43,265	179,833	137,652
Interest expense	23,883	21,644	49,861	43,185
Earnings before provision for income taxes	51,628	21,621	129,972	94,467
Provision for income taxes	13,316	8,253	34,469	27,884
Net earnings	$ 38,312	$ 13,368	$ 95,503	$ 66,583
Earnings per share:
Basic	$ 0.34	$ 0.12	$ 0.85	$ 0.58
Diluted	$ 0.34	$ 0.12	$ 0.84	$ 0.57
Weighted-average shares:
Basic	112,603	114,823	112,538	115,478
Diluted	114,342	115,795	114,028	116,462