Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Mar. 04, 2023	Nov. 26, 2022	Aug. 27, 2022	May 28, 2022	May 30, 2020	Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021
Restructuring related costs
Total restructuring-related costs						$ 108,626	$ 35,121	$ 84,552
Impairment of intangible assets					$ 29,852
Trademarks
Restructuring related costs
Impairment of intangible assets								29,852
Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs								63,613
Cost of revenues
Restructuring related costs
Total restructuring-related costs								20,939
Total restructuring-related costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						108,626	35,121	84,552
Total restructuring-related costs | Accrued salaries, wages and other current liabilities
Restructuring related costs
Balance-beginning of period	$ 18,116	$ 14,365	$ 14,408	$ 8,720		8,720
Additions charged to expense	46,675	26,500	12,805	22,646
Cash payments	(14,979)	(22,749)	(12,848)	(16,958)
Balance-end of period	49,812	18,116	14,365	14,408		49,812	8,720
Severance and related costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						19,430	2,502	17,796
Severance and related costs | Accrued salaries, wages and other current liabilities
Restructuring related costs
Balance-beginning of period	9,409	9,061	10,930	4,257		4,257
Additions charged to expense	1,813	4,800	913	11,904
Cash payments	(3,564)	(4,452)	(2,782)	(5,231)
Balance-end of period	7,658	9,409	9,061	10,930		7,658	4,257
Non-executive retention costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs								1,012
Professional and other fees | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						89,196	32,619	44,805
Professional and other fees | Accrued salaries, wages and other current liabilities
Restructuring related costs
Balance-beginning of period	8,707	5,304	3,478	4,463		4,463
Additions charged to expense	44,862	21,700	11,892	10,742
Cash payments	(11,415)	(18,297)	(10,066)	(11,727)
Balance-end of period	$ 42,154	$ 8,707	$ 5,304	$ 3,478		42,154	4,463
SKU Optimization Charges [Member]
Restructuring related costs
Total restructuring-related costs								20,939
SKU Optimization Charges [Member] | Cost of revenues
Restructuring related costs
Total restructuring-related costs								20,939
Retail Pharmacy Segment | Total restructuring-related costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						86,484	12,237	75,571
Retail Pharmacy Segment | Severance and related costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						15,342		13,443
Retail Pharmacy Segment | Non-executive retention costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs								1,136
Retail Pharmacy Segment | Professional and other fees | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						71,142	12,237	40,053
Retail Pharmacy Segment | SKU Optimization Charges [Member] | Cost of revenues
Restructuring related costs
Total restructuring-related costs								20,939
Pharmacy Services Segment | Total restructuring-related costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						22,142	22,884	8,981
Pharmacy Services Segment | Severance and related costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						4,088	2,502	4,353
Pharmacy Services Segment | Non-executive retention costs | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs								(124)
Pharmacy Services Segment | Professional and other fees | Selling, general and administrative expenses
Restructuring related costs
Total restructuring-related costs						$ 18,054	$ 20,382	$ 4,752