Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Class A Common Stock	Additional paid in capital	Amount	Accumulated other comprehensive (loss) income	Retained earnings (accumulated deficit)	Adoption of new accounting standards, net of tax	Adoption of new accounting standards, net of tax Accumulated other comprehensive (loss) income	Adoption of new accounting standards, net of tax Retained earnings (accumulated deficit)
Beginning balance (in shares) at Feb. 23, 2019		579,443,146		3,671,621
Beginning balance at Feb. 23, 2019	$ 1,450.7	$ 5.8	$ 1,811.2	$ (25.8)	$ 91.3	$ (431.8)	$ 574.6	$ 16.6	$ 558.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	11.1		11.1
Employee tax withholding on vesting of phantom units	(12.1)		(12.1)
Net income	49.0
Other comprehensive income, net of tax	(18.5)				(18.5)
Other activity	(0.4)		(0.1)			(0.3)
Ending balance (in shares) at Jun. 15, 2019		579,443,146		3,671,621
Ending balance at Jun. 15, 2019	2,054.4	$ 5.8	1,810.1	$ (25.8)	89.4	174.9
Beginning balance (in shares) at Feb. 29, 2020		582,997,251		3,671,621
Beginning 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]
Issuance of common stock to Company's parents (in shares)		1,312,859
Equity-based compensation	19.0		19.0
Employee tax withholding on vesting of phantom units	(6.2)		(6.2)
Repurchase of common stock (in shares)				101,611,736
Repurchase of common stock	(1,680.0)			$ (1,680.0)
Dividends accrued on convertible preferred stock	(3.9)					(3.9)
Net income	586.2					586.2
Other comprehensive income, net of tax	1.7				1.7
Ending balance (in shares) at Jun. 20, 2020		584,310,110		105,283,357
Ending balance at Jun. 20, 2020	$ 1,194.9	$ 5.8	$ 1,837.1	$ (1,705.8)	$ (116.8)	$ 1,174.6