Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Jan. 31, 2016

Jan. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	2015 Quarters Ended*
(in millions, except per share amounts)	April 30		July 31 a		October 31		January 31 b
Net sales	$	962.4	$	990.5	$	938.2	$	1,213.6
Gross profit	569.0		593.0		564.5		764.8
Earnings from operations	170.0		172.8		156.4		260.9
Net earnings	104.9		104.9		91.0		163.2
Net earnings per share:
Basic	$	0.81	$	0.81	$	0.71	$	1.28
Diluted	$	0.81	$	0.81	$	0.70	$	1.28

^a  On a pre-tax basis, includes a charge of $9.6 million for the quarter ended July 31, 2015, which reduced net earnings per diluted share by $0.05, associated with an impairment charge related to a financing arrangement with Koidu Limited (see "Note B - Summary of Significant Accounting Policies" and "Note J - Commitments and Contingencies").

^b  On a pre-tax basis, includes charges for the quarter ended January 31, 2016 of:

i. $28.3 million, which reduced net earnings per diluted share by $0.14, associated with an impairment charge related to a financing arrangement with Koidu Limited (see "Note B - Summary of Significant Accounting Policies" and "Note J - Commitments and Contingencies"); and

ii. $8.8 million, which reduced net earnings per diluted share by $0.04, associated with severance related to staffing reductions and subleasing of certain office space for which only a portion of the Company's future rent obligations will be recovered (see "Note J - Commitments and Contingencies").

	2014 Quarters Ended*
(in millions, except per share amounts)	April 30		July 31		October 31 c		January 31
Net sales	$	1,012.1	$	992.9	$	959.6	$	1,285.3
Gross profit	589.5		595.2		570.9		781.6
Earnings from operations	209.8		208.5		168.5		304.6
Net earnings	125.6		124.1		38.3		196.2
Net earnings per share:
Basic	$	0.97	$	0.96	$	0.30	$	1.52
Diluted	$	0.97	$	0.96	$	0.29	$	1.51

^c  On a pre-tax basis, includes a charge of $93.8 million for the quarter ended October 31, which reduced net earnings per diluted share by $0.47, associated with the redemption of $400.0 million in aggregate principal amount of the Private Placement Notes prior to their scheduled maturities (see "Note G - Debt").

* The sum of quarterly amounts may not agree with full year amounts due to rounding.