Supplementary Cash Flow Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 03, 2018	Mar. 04, 2017	Feb. 27, 2016
Supplementary Cash Flow Data
Cash paid for interest	$ 405,579	$ 409,692	$ 403,727
Cash payments for income taxes, net	87,087	17,081	4,856
Equipment financed under capital leases	13,123	7,551	9,614
Equipment received for noncash consideration	2,044	746	3,011
Reduction in lease financing obligation	4,740
Accrued capital expenditures	28,869	27,232	50,391
Gross borrowings from revolver	4,221,000	3,608,000	4,729,000
Gross repayments to revolver	$ 6,651,000	$ 3,278,000	$ 4,354,000