EMPLOYEE BENEFIT PLANS AND COLLECTIVE BARGAINING AGREEMENTS - Schedule of Multiemployer Plan (Details) - Pension $ in Millions	12 Months Ended
	Feb. 26, 2022 USD ($) agreement	Feb. 27, 2021 USD ($)	Feb. 29, 2020 USD ($)
Multiemployer Plans [Line Items]
Contributions by company | $	$ 523.7	$ 524.0	$ 469.3
UFCW-Northern California Employers Joint Pension Trust Fund
Multiemployer Plans [Line Items]
Contributions by company | $	$ 128.1	123.2	103.8
Total collective bargaining agreements	85
Most significant collective bargaining agreement	78
Western Conference of Teamsters Pension Plan
Multiemployer Plans [Line Items]
Contributions by company | $	$ 68.6	66.9	64.9
Total collective bargaining agreements	53
Most significant collective bargaining agreement	10
Southern California United Food & Commercial Workers Unions and Food Employers Joint Pension Plan
Multiemployer Plans [Line Items]
Contributions by company | $	$ 138.4	133.7	116.1
Total collective bargaining agreements	45
Most significant collective bargaining agreement	43
Combined Plan
Multiemployer Plans [Line Items]
Contributions by company | $	$ 0.0	26.6	26.2
Total collective bargaining agreements	19
Most significant collective bargaining agreement	15
Sound Retirement Trust
Multiemployer Plans [Line Items]
Contributions by company | $	$ 61.4	53.8	44.3
Total collective bargaining agreements	129
Most significant collective bargaining agreement	14
Bakery and Confectionery Union and Industry International Pension Fund
Multiemployer Plans [Line Items]
Contributions by company | $	$ 18.2	18.7	18.5
Total collective bargaining agreements	109
Most significant collective bargaining agreement	35
UFCW Union and Participating Food Industry Employers Tri-State Pension Fund
Multiemployer Plans [Line Items]
Contributions by company | $	$ 12.0	12.0	14.9
Total collective bargaining agreements	6
Most significant collective bargaining agreement	2
Rocky Mountain UFCW Unions & Employers Pension Plan
Multiemployer Plans [Line Items]
Contributions by company | $	$ 15.7	15.5	12.3
Total collective bargaining agreements	85
Most significant collective bargaining agreement	25
UFCW Local 152 Retail Meat Pension Fund
Multiemployer Plans [Line Items]
Contributions by company | $	$ 11.6	11.1	10.9
Total collective bargaining agreements	4
Most significant collective bargaining agreement	4
Desert States Employers & UFCW Unions Pension Plan
Multiemployer Plans [Line Items]
Contributions by company | $	$ 11.6	8.9	8.9
Total collective bargaining agreements	16
Most significant collective bargaining agreement	13
UFCW International Union - Industry Pension Fund
Multiemployer Plans [Line Items]
Contributions by company | $	$ 0.0	4.6	9.5
Total collective bargaining agreements	28
Most significant collective bargaining agreement	6
Retail Food Employers and UFCW Local 711 Pension Trust Fund
Multiemployer Plans [Line Items]
Contributions by company | $	$ 8.6	8.6	7.3
Total collective bargaining agreements	7
Most significant collective bargaining agreement	4
Oregon Retail Employees Pension Trust
Multiemployer Plans [Line Items]
Contributions by company | $	$ 12.0	10.0	8.9
Total collective bargaining agreements	129
Most significant collective bargaining agreement	20
Intermountain Retail Store Employees Pension Trust
Multiemployer Plans [Line Items]
Contributions by company | $	$ 7.9	6.9	5.8
Total collective bargaining agreements	54
Most significant collective bargaining agreement	17
Other funds
Multiemployer Plans [Line Items]
Contributions by company | $	$ 29.6	$ 23.5	$ 17.0