Summary of Significant Accounting Policies - Recently adopted accounting pronouncements (Details)		12 Months Ended
	Mar. 03, 2019 USD ($) $ / shares shares	Feb. 29, 2020 USD ($) item $ / shares shares	Mar. 03, 2018 USD ($)	Apr. 18, 2019 shares	Apr. 17, 2019 shares	Mar. 02, 2019 USD ($) $ / shares shares	Mar. 04, 2018 USD ($)	Mar. 04, 2017 USD ($)
Basis of presentation
Lease, Practical Expedients, Package [true false]	true
Operating lease liability		$ 3,200,508,000
Operating right-of-use assets		2,903,256,000
Retained Earnings (Accumulated Deficit)		(5,222,194,000)	$ (4,282,471,000)			$ (4,713,244,000)	$ (4,291,031,000)
Deferred gains on sale-leaseback transactions		4,149,000
Lease exit liability		$ 2,253,000	133,290,000			124,046,000		$ 165,138,000
Number of fixed lease payment | item		1
Current assets:
Cash and cash equivalents		$ 218,180,000	447,334,000			144,353,000		245,410,000
Accounts receivable, net		1,286,785,000	1,869,100,000			1,788,712,000	1,811,203,000
Inventories, net		1,921,604,000	1,799,539,000			1,871,941,000	1,850,660,000
Prepaid expenses and other current assets		181,794,000				179,132,000
Current assets held for sale		92,278,000				117,581,000
Total current assets		3,700,641,000				4,101,719,000
Property, plant and equipment, net		1,215,838,000				1,308,514,000
Operating lease right-of-use asset		2,903,256,000
Goodwill		1,108,136,000	1,421,120,000			1,108,136,000
Other intangibles, net		359,491,000				448,706,000
Deferred tax assets		16,680,000	594,019,000			409,084,000	592,235,000
Other assets		148,327,000				215,208,000
Total assets		9,452,369,000	8,989,327,000			7,591,367,000	8,980,767,000
Current liabilities:
Current maturities of long-term debt and lease financing obligations		8,840,000				16,111,000
Accounts payable		1,484,081,000				1,618,585,000
Accrued salaries, wages and other current liabilities		746,318,000				808,439,000
Current portion of operating lease liabilities		490,161,000
Current liabilities held for sale		37,063,000
Total current liabilities		2,766,463,000				2,443,135,000
Long-term debt, less current maturities		3,077,268,000				3,454,585,000
Long-term operating lease liabilities		2,710,347,000
Lease financing obligations, less current maturities, ASC842		19,326,000
Lease financing obligations, less current maturities, ASC840						24,064,000
Other noncurrent liabilities		204,438,000				482,893,000
Total liabilities		8,777,842,000				6,404,677,000
Commitments and contingencies
Stockholders' equity:
Common stock, par value $1 per share; 75,000 shares authorized; shares issued and outstanding 54,016		54,716,000				54,016,000
Additional paid-in capital		5,890,903,000				5,876,977,000
Accumulated deficit		(5,222,194,000)	(4,282,471,000)			(4,713,244,000)	(4,291,031,000)
Accumulated other comprehensive loss		(48,898,000)				(31,059,000)
Total stockholders' equity		674,527,000	1,601,010,000			1,186,690,000	1,592,450,000	$ 614,070,000
Total liabilities and stockholders' equity		$ 9,452,369,000				$ 7,591,367,000
Common stock, par value (in dollars per share) | $ / shares	$ 1	$ 1,000				$ 1,000
Common stock, shares authorized | shares	75,000,000	75,000,000		75,000,000	1,500,000,000	75,000,000
Common stock, shares issued | shares	54,016,000	54,716,000				54,016,000
Common stock, shares outstanding | shares	54,016,000	54,716,000				54,016,000
Accounts Receivable, Net, Current		$ 1,286,785,000	1,869,100,000			$ 1,788,712,000	1,811,203,000
Deferred Tax Assets, Net, Noncurrent		16,680,000	594,019,000			409,084,000	592,235,000
Inventory, Net		$ 1,921,604,000	1,799,539,000			1,871,941,000	1,850,660,000
Maximum
Basis of presentation
Maximum additional period for lease extension		5 years
Revenue Adjustments
Basis of presentation
Retained Earnings (Accumulated Deficit)							(8,560,000)
Current assets:
Accounts receivable, net							(57,897,000)
Inventories, net							51,121,000
Deferred tax assets							(1,784,000)
Total assets							(8,560,000)
Stockholders' equity:
Accumulated deficit							(8,560,000)
Total stockholders' equity							(8,560,000)
Accounts Receivable, Net, Current							(57,897,000)
Deferred Tax Assets, Net, Noncurrent							(1,784,000)
Inventory, Net							51,121,000
Accounting Standards Update 2016-02
Basis of presentation
Operating right-of-use assets	$ 3,026,976
Retained Earnings (Accumulated Deficit)	(4,770,020)
Current assets:
Cash and cash equivalents	144,353
Accounts receivable, net	1,788,712
Inventories, net	1,871,941
Prepaid expenses and other current assets	127,684
Current assets held for sale	161,278
Total current assets	4,093,968
Property, plant and equipment, net	1,308,514
Operating lease right-of-use asset	3,026,976
Goodwill	1,108,136
Other intangibles, net	419,074
Deferred tax assets	409,084
Other assets	214,122
Total assets	10,579,874
Current liabilities:
Current maturities of long-term debt and lease financing obligations	16,111
Accounts payable	1,618,585
Accrued salaries, wages and other current liabilities	751,886
Current portion of operating lease liabilities	457,305
Current liabilities held for sale	45,167
Total current liabilities	2,889,054
Long-term debt, less current maturities	3,454,585
Long-term operating lease liabilities	2,838,022
Lease financing obligations, less current maturities, ASC842	24,064
Other noncurrent liabilities	244,235
Total liabilities	9,449,960
Stockholders' equity:
Common stock, par value $1 per share; 75,000 shares authorized; shares issued and outstanding 54,016	54,016
Additional paid-in capital	5,876,977
Accumulated deficit	(4,770,020)
Accumulated other comprehensive loss	(31,059)
Total stockholders' equity	1,129,914
Total liabilities and stockholders' equity	10,579,874
Accounts Receivable, Net, Current	1,788,712
Deferred Tax Assets, Net, Noncurrent	409,084
Inventory, Net	1,871,941
Accounting Standards Update 2016-02 | As Previously Reported
Basis of presentation
Retained Earnings (Accumulated Deficit)						(4,713,244)
Current assets:
Cash and cash equivalents						144,353
Accounts receivable, net						1,788,712
Inventories, net						1,871,941
Prepaid expenses and other current assets						179,132
Current assets held for sale						117,581
Total current assets						4,101,719
Property, plant and equipment, net						1,308,514
Goodwill						1,108,136
Other intangibles, net						448,706
Deferred tax assets						409,084
Other assets						215,208
Total assets						7,591,367
Current liabilities:
Current maturities of long-term debt and lease financing obligations						16,111
Accounts payable						1,618,585
Accrued salaries, wages and other current liabilities						808,439
Total current liabilities						2,443,135
Long-term debt, less current maturities						3,454,585
Lease financing obligations, less current maturities, ASC840						24,064
Other noncurrent liabilities						482,893
Total liabilities						6,404,677
Stockholders' equity:
Common stock, par value $1 per share; 75,000 shares authorized; shares issued and outstanding 54,016						54,016
Additional paid-in capital						5,876,977
Accumulated deficit						(4,713,244)
Accumulated other comprehensive loss						(31,059)
Total stockholders' equity						1,186,690
Total liabilities and stockholders' equity						7,591,367
Accounts Receivable, Net, Current						1,788,712
Deferred Tax Assets, Net, Noncurrent						409,084
Inventory, Net						1,871,941
Accounting Standards Update 2016-02 | Adjustments
Basis of presentation
Operating lease liability	3,295,327
Operating right-of-use assets	3,026,976
Retained Earnings (Accumulated Deficit)	(56,776)
Impairment loss	81,745
Deferred gains on sale-leaseback transactions	24,969
Lease exit liability	9,333					$ 124,046
Current assets:
Prepaid expenses and other current assets	(51,448)
Current assets held for sale	43,697
Total current assets	(7,751)
Operating lease right-of-use asset	3,026,976
Other intangibles, net	(29,632)
Other assets	(1,086)
Total assets	2,988,507
Current liabilities:
Accrued salaries, wages and other current liabilities	(56,553)
Current portion of operating lease liabilities	457,305
Current liabilities held for sale	45,167
Total current liabilities	445,919
Long-term operating lease liabilities	2,838,022
Other noncurrent liabilities	(238,658)
Total liabilities	3,045,283
Stockholders' equity:
Accumulated deficit	(56,776)
Total stockholders' equity	(56,776)
Total liabilities and stockholders' equity	$ 2,988,507
Accounting Standards Update 2014-09
Stockholders' equity:
Revenue and costs previously reported gross			$ 123,500,000
Accounting Standards Update 2014-09 | Revenue Adjustments
Basis of presentation
Retained Earnings (Accumulated Deficit)							(8,560,000)
Current assets:
Accounts receivable, net							(57,897,000)
Inventories, net							51,121,000
Deferred tax assets							(1,784,000)
Stockholders' equity:
Accumulated deficit							(8,560,000)
Accounts Receivable, Net, Current							(57,897,000)
Deferred Tax Assets, Net, Noncurrent							(1,784,000)
Inventory, Net							$ 51,121,000