Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Class A Common Stock	Additional paid in capital	Treasury Stock	Accumulated other comprehensive income (loss)	Accumulated other comprehensive income (loss) Cumulative Effect, Period of Adoption, Adjustment	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ending balance (in shares)			579,443,146		(3,671,621)
Beginning balance (in shares) at Feb. 23, 2019			579,443,146		(3,671,621)
Beginning balance at Feb. 23, 2019	$ 1,450.7	$ 574.6	$ 5.8	$ 1,811.2	$ (25.8)	$ 91.3	$ 16.6	$ (431.8)	$ 558.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock to Company's parents (in shares)			3,554,105
Equity-based compensation	32.8			32.8
Employee tax withholding on vesting of restricted stock units	(18.8)			(18.8)
Net income	466.4							466.4
Other comprehensive income (loss), net of tax	(226.4)					(226.4)
Other activity	(1.2)			(0.9)				(0.3)
Ending balance at Feb. 29, 2020	2,278.1		$ 5.8	1,824.3	$ (25.8)	(118.5)		592.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ending balance (in shares)			582,997,251		(3,671,621)
Beginning balance (in shares) at Feb. 29, 2020			582,997,251		(3,671,621)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock to Company's parents (in shares)			1,312,859
Equity-based compensation	59.0			59.0
Shares issued and employee tax withholding on vesting of restricted stock units (in shares)			1,264,556
Shares issued and employee tax withholding on vesting of restricted stock units	(14.0)		$ 0.1	(14.1)
Equity reclassification	30.0			30.0
Repurchase of common stock (in shares)					116,338,026
Repurchase of common stock	(1,881.2)				$ (1,881.2)
Cash dividends declared on common stock	(93.7)							(93.7)
Dividends accrued on convertible preferred stock	(86.0)							(86.0)
Net income	850.2							850.2
Other comprehensive income (loss), net of tax	182.0					182.0
Other activity	(0.1)			(0.3)				0.2
Ending balance at Feb. 27, 2021	1,324.3		$ 5.9	1,898.9	$ (1,907.0)	63.5		1,263.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ending balance (in shares)			585,574,666		(120,009,647)
Beginning balance (in shares) at Feb. 27, 2021			585,574,666		(120,009,647)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	101.2			101.2
Shares issued and employee tax withholding on vesting of restricted stock units (in shares)			2,329,617
Shares issued and employee tax withholding on vesting of restricted stock units	(29.4)		$ 0.0	(29.4)
Convertible preferred stock conversions (in shares)					(20,369,582)
Convertible preferred stock conversions	320.6			61.0	$ 259.6
Cash dividends declared on common stock	(207.4)							(207.4)
Dividends accrued on convertible preferred stock	(109.4)							(109.4)
Net income	1,619.6							1,619.6
Other comprehensive income (loss), net of tax	5.5					5.5
Other activity	(0.4)			0.5				(0.9)
Ending balance at Feb. 26, 2022	$ 3,024.6		$ 5.9	$ 2,032.2	$ (1,647.4)	$ 69.0		$ 2,564.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ending balance (in shares)			587,904,283		(99,640,065)