The net result for the period of deducting operating expenses from operating revenues.

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Stock-Based Compensation - Summary of RSUs (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Operating income (loss)	$ 465.5	$ 358.4	$ 1,206.3	$ 1,012.8
Restricted Stock Units (RSUs)
Number of Shares
Nonvested, beginning balance (in shares)			1,049,081
Granted (in shares)			845,394
Vested (in shares)			(528,710)
Forfeited (in shares)			(80,457)
Nonvested, Ending balance (in shares)	1,285,308		1,285,308
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (USD per share)			$ 95.17
Granted (USD per share)			73.08
Vested (USD per share)			91.06
Forfeited (USD per share)			83.36
Nonvested, ending balance (USD per share)	$ 83.07		$ 83.07