Quarterly Financial Data (Unaudited) - (Tables)

12 Months Ended

Jan. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	2018 Quarters Ended
(in millions, except per share amounts)	April 30		July 31		October 31		January 31
Net sales	$	1,033.2	$	1,075.9	$	1,012.4	$	1,320.6
Gross profit	650.9		688.8		629.3		842.0
Earnings from operations	204.3		191.2		126.4		268.4
Net earnings	142.3		144.7		94.9		204.5
Net earnings per share:
Basic	$	1.14	$	1.17	$	0.78	$	1.68
Diluted	$	1.14	$	1.17	$	0.77	$	1.67

	2017 Quarters Ended
(in millions, except per share amounts)	April 30		July 31		October 31		January 31 a
Net sales	$	899.6	$	959.7	$	976.2	$	1,334.3
Gross profit	559.1		599.6		600.0		852.0
Earnings from operations	149.6		184.7		164.0		311.1
Net earnings	92.9		115.0		100.2		61.9
Net earnings per share:
Basic	$	0.75	$	0.92	$	0.81	$	0.50
Diluted	$	0.74	$	0.92	$	0.80	$	0.50

^a  Net earnings included a net charge of $146.2 million, or $1.17 per diluted share, related to the estimated impact of the 2017 Tax Act (see "Note N. Income Taxes") for the quarter ended January 31, 2018.