Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		4 Months Ended		9 Months Ended		12 Months Ended
	Nov. 30, 2019	Dec. 01, 2018	Jun. 15, 2019	Jun. 16, 2018	Nov. 30, 2019	Dec. 01, 2018	Feb. 23, 2019
Cash flows from operating activities:
Net income (loss)	$ 54.8	$ 45.6	$ 49.0	$ (17.7)	$ 398.6	$ (4.5)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on property dispositions and impairment losses, net	(18.7)	12.1			(482.7)	(163.7)
Depreciation and amortization					1,281.9	1,340.8
Operating lease right-of-use assets amortization					418.3
LIFO expense	2.6	2.8			18.9	15.7
Deferred income tax					(40.6)	(135.2)
Contributions to pension and post-retirement benefit plans, net of (income) expense					(16.2)	(178.2)
Amortization and write-off of deferred financing costs					35.4	38.3
Loss on debt extinguishment	0.0	9.5			65.8	9.5
Equity-based compensation expense					24.8	35.5
Other					8.9	(35.9)
Changes in operating assets and liabilities:
Receivables, net					84.9	47.1
Inventories, net					(310.4)	(234.0)
Accounts payable, accrued salaries and wages and other accrued liabilities					322.4	347.4
Operating lease liabilities					(385.5)
Other operating assets and liabilities					(37.5)	(13.7)
Net cash provided by operating activities					1,387.0	1,069.1
Cash flows from investing activities:
Payments for property, equipment and intangibles, including payments for lease buyouts					(1,083.7)	(916.9)
Proceeds from sale of assets					1,061.0	529.3
Other					(2.7)	27.0
Net cash used in investing activities					(25.4)	(360.6)
Cash flows from financing activities:
Proceeds from issuance of long-term debt					1,518.0	1,365.8
Payments on long-term borrowings					(3,300.8)	(2,113.8)
Payments of obligations under finance leases					(78.3)
Payments of obligations under finance leases						(74.5)
Payments for debt financing costs					(25.5)	(18.6)
Purchase of treasury stock, at cost					0.0	(25.8)	$ (25.8)
Other					(26.1)	(36.3)
Net cash used in financing activities					(1,912.7)	(903.2)
Net decrease in cash and cash equivalents and restricted cash					(551.1)	(194.7)
Cash and cash equivalents and restricted cash at beginning of period			$ 967.7	$ 680.8	967.7	680.8	680.8
Cash and cash equivalents and restricted cash at end of period	$ 416.6	$ 486.1			$ 416.6	$ 486.1	$ 967.7