Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 23, 2019
Income Statement [Abstract]
Net sales and other revenue	$ 69,690.4	$ 62,455.1	$ 60,534.5
Cost of sales	49,275.9	44,860.9	43,639.9
Gross profit	20,414.5	17,594.2	16,894.6
Selling and administrative expenses	18,835.8	16,641.9	16,272.3
Gain on property dispositions and impairment losses, net	(38.8)	(484.8)	(165.0)
Operating income	1,617.5	1,437.1	787.3
Interest expense, net	538.2	698.0	830.8
Loss on debt extinguishment	85.3	111.4	8.7
Other (income) expense, net	(134.7)	28.5	(104.4)
Income before income taxes	1,128.7	599.2	52.2
Income tax expense (benefit)	278.5	132.8	(78.9)
Net income	850.2	466.4	131.1
Other comprehensive income (loss), net of tax:
Loss on interest rate swaps	0.0	(3.4)	(15.5)
Recognition of pension gain (loss)	183.0	(210.5)	(83.1)
Other	(1.0)	4.1	(1.2)
Other comprehensive income (loss)	182.0	(209.8)	(99.8)
Comprehensive income	$ 1,032.2	$ 256.6	$ 31.3
Net income per Class A common share:
Basic net income per common share (in dollars per share)	$ 1.53	$ 0.80	$ 0.23
Diluted net income per common share (in dollars per share)	$ 1.47	$ 0.80	$ 0.23
Weighted average Class A common shares outstanding:
Basic (in shares)	500.3	579.4	580.5
Weighted average Class A common shares outstanding - Basic (in shares)	578.1	580.3	580.7