Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Class A Common Stock	Additional paid in capital	Treasury Stock	Accumulated other comprehensive income	Retained earnings
Beginning balance (in shares) at Feb. 27, 2021		585,574,666
Beginning AOCI balance at Feb. 27, 2021	$ 1,324.3	$ 5.9	$ 1,898.9	$ (1,907.0)	$ 63.5	$ 1,263.0
Treasury stock, beginning balance (in shares) at Feb. 27, 2021				120,009,647
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	22.2		22.2
Shares issued and employee tax withholding on vesting of restricted stock units (in shares)		945,942
Shares issued and employee tax withholding on vesting of restricted stock units	(10.0)		(10.0)
Cash dividends declared on common stock	(46.5)					(46.5)
Dividends accrued on convertible preferred stock	(36.4)					(36.4)
Net income	444.8					444.8
Other comprehensive income (loss), net of tax	0.1				0.1
Other activity	(0.1)					(0.1)
Ending balance (in shares) at Jun. 19, 2021		586,520,608
Ending AOCI balance at Jun. 19, 2021	1,698.4	$ 5.9	1,911.1	$ (1,907.0)	63.6	1,624.8
Treasury stock, ending balance (in shares) at Jun. 19, 2021				120,009,647
Beginning balance (in shares) at Feb. 26, 2022		587,904,283
Beginning AOCI balance at Feb. 26, 2022	$ 3,024.6	$ 5.9	2,032.2	$ (1,647.4)	69.0	2,564.9
Treasury stock, beginning balance (in shares) at Feb. 26, 2022	99,640,065			99,640,065
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	$ 35.3		35.3
Shares issued and employee tax withholding on vesting of restricted stock units (in shares)		2,479,845
Shares issued and employee tax withholding on vesting of restricted stock units	(37.3)		(37.3)
Convertible preferred stock conversions (in shares)				(40,863,977)
Convertible preferred stock conversions	643.1		(32.5)	$ 675.6
Cash dividends declared on common stock	(63.0)					(63.0)
Dividends accrued on convertible preferred stock	(13.7)					(13.7)
Net income	484.2					484.2
Other comprehensive income (loss), net of tax	(2.8)				(2.8)
Other activity	0.2		0.5			(0.3)
Ending balance (in shares) at Jun. 18, 2022		590,384,128
Ending AOCI balance at Jun. 18, 2022	$ 4,070.6	$ 5.9	$ 1,998.2	$ (971.8)	$ 66.2	$ 2,972.1
Treasury stock, ending balance (in shares) at Jun. 18, 2022	58,776,088			58,776,088