CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 541,100,000	$ 586,400,000	$ 370,100,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	259,700,000	229,000,000.0	206,900,000
Amortization of gain on sale-leasebacks	0	(8,400,000)	(8,200,000)
Provision for inventories	21,600,000	54,400,000	28,900,000
Deferred income taxes	6,600,000	(21,300,000)	96,800,000
Provision for pension/postretirement benefits	29,400,000	35,700,000	35,000,000.0
Share-based compensation expense	33,200,000	34,100,000	28,000,000.0
Loan impairment charges	0	0	3,000,000.0
Asset impairment charges	0	0	10,000,000.0
(Gains) losses on sales of marketable securities	(2,600,000)	2,300,000	(3,500,000)
Changes in assets and liabilities:
Accounts receivable	3,700,000	(30,800,000)	7,000,000.0
Inventories	(72,700,000)	(270,500,000)	(52,900,000)
Prepaid expenses and other current assets	(36,300,000)	(11,300,000)	(28,800,000)
Other assets, net	(35,600,000)	(22,200,000)	(3,700,000)
Accounts payable and accrued liabilities	33,000,000.0	53,700,000	98,800,000
Income taxes payable	(90,900,000)	(104,600,000)	149,700,000
Merchandise credits and deferred revenue	(7,300,000)	(1,000,000.0)	6,200,000
Other long-term liabilities	(12,000,000.0)	6,300,000	(11,100,000)
Net cash provided by operating activities	670,900,000	531,800,000	932,200,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities and short-term investments	(53,000,000.0)	(154,100,000)	(598,000,000.0)
Proceeds from sales of marketable securities and short-term investments	90,000,000.0	394,100,000	351,400,000
Capital expenditures	(320,600,000)	(282,100,000)	(239,300,000)
Other, net	4,300,000	12,200,000	4,800,000
Net cash used in investing activities	(279,300,000)	(29,900,000)	(481,100,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from (repayment of) credit facility borrowings, net	1,500,000	(18,400,000)	(67,800,000)
Proceeds from other credit facility borrowings	133,100,000	49,300,000	39,200,000
Repayment of other credit facility borrowings	(96,100,000)	(32,000,000.0)	(96,100,000)
Repurchase of Common Stock	(163,400,000)	(421,400,000)	(99,200,000)
Proceeds from exercised stock options	108,400,000	23,100,000	54,600,000
Payments related to tax withholding for share-based payment arrangements	(15,100,000)	(8,600,000)	(8,700,000)
Cash dividends on Common Stock	(276,300,000)	(263,800,000)	(242,600,000)
Distribution to non-controlling interest	0	(300,000)	(500,000)
Financing fees	0	(2,200,000)	0
Net cash used in financing activities	(307,900,000)	(674,300,000)	(421,100,000)
Effect of exchange rate changes on cash and cash equivalents	(1,600,000)	(5,700,000)	12,700,000
Net increase (decrease) in cash and cash equivalents	82,100,000	(178,100,000)	42,700,000
Cash and cash equivalents at beginning of year	792,600,000	970,700,000	928,000,000.0
Cash and cash equivalents at end of year	$ 874,700,000	$ 792,600,000	$ 970,700,000