Capital Stock and Earnings (Loss) Per Share - Calculation of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Basic earnings (loss) per share
Net (loss) income	$ 866,656	$ 828,263	$ (235,053)	$ 2,287,403
Weighted average common shares outstanding for basic earnings (loss) per share calculation (in shares)	1,199,951	1,206,369	1,198,798	1,210,475
Basic earnings (loss) per share (in dollars per share)	$ 0.72	$ 0.69	$ (0.20)	$ 1.89
Diluted earnings (loss) per share:
Net income (loss)	$ 866,656	$ 828,263	$ (235,053)	$ 2,287,403
Weighted average common shares outstanding for basic earnings (loss) per share calculation (in shares)	1,199,951	1,206,369	1,198,798	1,210,475
Assumed exercise/vesting of stock options and awards (in shares)	14,244	17,919	0	18,428
Weighted average common shares outstanding for diluted earnings (loss) per share calculation (in shares)	1,214,195	1,224,288	1,198,798	1,228,903
Diluted earnings (loss) per share (in dollars per share)	$ 0.71	$ 0.68	$ (0.20)	$ 1.86
Cash dividends declared per share (in dollars per share)	$ 0	$ 0.230	$ 0	$ 0.690