Income Taxes (Details) - USD ($)	2 Months Ended	3 Months Ended								10 Months Ended	12 Months Ended
	Mar. 02, 2019	Mar. 02, 2019	Dec. 01, 2018	Sep. 01, 2018	Jun. 02, 2018	Mar. 03, 2018	Dec. 02, 2017	Sep. 02, 2017	Jun. 03, 2017	Dec. 31, 2017	Mar. 02, 2019	Mar. 03, 2018	Mar. 04, 2017
Federal statutory rate (as a percent)	21.00%									35.00%	21.00%	32.60%	35.00%
Current tax:
Federal											$ (22,187,000)	$ (210,000)
State											9,866,000	51,279,000	$ 14,600,000
Total current tax expense (benefit)											(12,321,000)	51,069,000	14,600,000
Deferred tax and other:
Federal											50,151,000	316,451,000	10,355,000
State											39,647,000	(61,533,000)	19,483,000
Total deferred tax expense (benefit)											89,798,000	254,918,000	29,838,000
Total income tax expense (benefit)		$ 195,004,000	$ (1,471,000)	$ (106,559,000)	$ (9,497,000)	$ 216,719,000	$ (16,061,000)	$ 117,450,000	$ (12,121,000)		77,477,000	305,987,000	44,438,000
Reconciliation of the expected statutory federal tax and the total income tax expense (benefit)
Federal statutory rate											(123,790,000)	(14,202,000)	16,982,000
Federal tax rate change		212,252,000				324,765,000						324,765,000
Nondeductible expenses											2,890,000	1,213,000	2,479,000
State income taxes, net											(12,605,000)	(22,836,000)	8,225,000
Increase/(decrease) of previously recorded liabilities											(3,105,000)	27,295,000	(955,000)
Nondeductible compensation											1,798,000	654,000	1,157,000
Acquisition costs												696,000	4,023,000
Stock based compensation											3,478,000	8,363,000
Valuation allowance											212,252,000	(8,853,000)	14,718,000
Other											(3,441,000)	(11,108,000)	(2,191,000)
Total income tax expense (benefit)		195,004,000	$ (1,471,000)	$ (106,559,000)	(9,497,000)	216,719,000	$ (16,061,000)	$ 117,450,000	(12,121,000)		77,477,000	305,987,000	44,438,000
Income tax (benefit) expense											91,067,000	749,704,000	46,000
Deferred tax assets:
Accounts receivable	$ 36,607,000	36,607,000				39,182,000					36,607,000	39,182,000
Accrued expenses	107,356,000	107,356,000				113,493,000					107,356,000	113,493,000
Liability for lease exit costs	37,333,000	37,333,000				40,662,000					37,333,000	40,662,000
Pension, retirement and other benefits	87,397,000	87,397,000				104,494,000					87,397,000	104,494,000
Long-lived assets	320,561,000	320,561,000				246,793,000					320,561,000	246,793,000
Credits	48,884,000	48,884,000				85,555,000					48,884,000	85,555,000
Net operating losses	1,084,139,000	1,084,139,000				1,089,084,000					1,084,139,000	1,089,084,000
Total gross deferred tax assets	1,722,277,000	1,722,277,000				1,719,263,000					1,722,277,000	1,719,263,000
Valuation allowance	(1,091,416,000)	(1,091,416,000)				(896,800,000)					(1,091,416,000)	(896,800,000)
Total deferred tax assets	630,861,000	630,861,000				822,463,000					630,861,000	822,463,000
Deferred tax liabilities:
Outside basis difference	5,392,000	5,392,000				5,420,000					5,392,000	5,420,000
Inventory	215,588,000	215,588,000				223,024,000					215,588,000	223,024,000
Other	797,000	797,000				0					797,000	0
Total gross deferred tax liabilities	221,777,000	221,777,000				228,444,000					221,777,000	228,444,000
Net deferred tax assets	409,084,000	409,084,000				594,019,000					409,084,000	594,019,000
Reconciliation of beginning and ending amount of unrecognized tax benefits
Unrecognized tax benefits at beginning of the period					$ 230,210,000				$ 8,939,000	$ 8,939,000	230,210,000	8,939,000	10,676,000
Increases to prior year tax positions											155,000		16,000
Decreases to tax positions in prior periods											(111,000)	(1,015,000)	(626,000)
Increases to current year tax positions												224,408,000	26,000
Divestitures											(543,000)	(1,607,000)
Lapse of statute of limitations											(9,872,000)	(515,000)	(1,153,000)
Unrecognized tax benefits balance at end of the period	219,839,000	219,839,000				230,210,000					219,839,000	230,210,000	8,939,000
Unrecognized tax benefits which would impact effective tax rate, if recognized	$ 28,482,000	$ 28,482,000				$ 31,377,000					28,482,000	31,377,000	892,000
Decrease in unrecognized tax benefits related to state exposures											12,736,000
Discontinued operations
Reconciliation of the expected statutory federal tax and the total income tax expense (benefit)
Valuation allowance											$ (2,417,000)	$ (32,870,000)	$ 15,000