Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Class A Common Stock	Additional paid in capital	Treasury Stock	Accumulated other comprehensive income (loss)	Retained earnings (accumulated deficit)	Adoption of new accounting standards, net of tax	Adoption of new accounting standards, net of tax Accumulated other comprehensive income (loss)	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					49.0
Other comprehensive income (loss), 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. 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]
Net income	398.6
Ending balance (in shares) at Nov. 30, 2019		582,997,251		3,671,621
Ending balance at Nov. 30, 2019	2,410.6	$ 5.8	1,820.5	$ (25.8)	85.6	524.5
Beginning balance (in shares) at Jun. 15, 2019		579,443,146		3,671,621
Beginning balance at Jun. 15, 2019	2,054.4	$ 5.8	1,810.1	$ (25.8)	89.4	174.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	6.5		6.5
Employee tax withholding on vesting of phantom units	(0.9)		(0.9)
Net income	294.8					294.8
Other comprehensive income (loss), net of tax	(9.3)				(9.3)
Ending balance (in shares) at Sep. 07, 2019		579,443,146		3,671,621
Ending balance at Sep. 07, 2019	2,345.5	$ 5.8	1,815.7	$ (25.8)	80.1	469.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock to Company's parents (in shares)		3,554,105
Equity-based compensation	7.2		7.2
Employee tax withholding on vesting of phantom units	(1.7)		(1.7)
Net income	54.8					54.8
Other comprehensive income (loss), net of tax	5.5				5.5
Other activity	(0.7)		(0.7)
Ending balance (in shares) at Nov. 30, 2019		582,997,251		3,671,621
Ending balance at Nov. 30, 2019	2,410.6	$ 5.8	1,820.5	$ (25.8)	85.6	524.5
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 (loss), 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
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]
Net income	994.4
Ending balance (in shares) at Dec. 05, 2020		585,530,715		118,919,289
Ending balance at Dec. 05, 2020	1,374.7	$ 5.9	1,883.8	$ (1,890.5)	(105.9)	1,481.4
Beginning balance (in shares) at Jun. 20, 2020		584,310,110		105,283,357
Beginning balance at Jun. 20, 2020	1,194.9	$ 5.8	1,837.1	$ (1,705.8)	(116.8)	1,174.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	9.3		9.3
Shares issued and employee tax withholding on vesting of restricted stock (in shares)		22,101
Shares issued and employee tax withholding on vesting of restricted stock	(0.5)		(0.5)
Equity reclassification	30.0		30.0
Dividends accrued on convertible preferred stock	(26.9)					(26.9)
Net income	284.5					284.5
Other comprehensive income (loss), net of tax	10.4				10.4
Other activity	(0.1)		(0.1)
Ending balance (in shares) at Sep. 12, 2020		584,332,211		105,283,357
Ending balance at Sep. 12, 2020	1,501.6	$ 5.8	1,875.8	$ (1,705.8)	(106.4)	1,432.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-based compensation	15.1		15.1
Shares issued and employee tax withholding on vesting of restricted stock (in shares)		1,198,504
Shares issued and employee tax withholding on vesting of restricted stock	(6.9)	$ 0.1	(7.0)
Repurchase of common stock (in shares)				13,635,932
Repurchase of common stock	(184.7)			$ (184.7)
Dividends declared on common stock	(47.3)					(47.3)
Dividends accrued on convertible preferred stock	(27.3)
Net income	123.7					123.7
Other comprehensive income (loss), net of tax	0.5				0.5
Other activity			(0.1)			0.1
Ending balance (in shares) at Dec. 05, 2020		585,530,715		118,919,289
Ending balance at Dec. 05, 2020	$ 1,374.7	$ 5.9	$ 1,883.8	$ (1,890.5)	$ (105.9)	$ 1,481.4