Employee Benefit Plan Obligations (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
May 27, 2016 | Feb. 28, 2020 | Feb. 22, 2019 | Feb. 23, 2018 |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Defined Contribution Obligation | | $ 28.1 | $ 25 | |
Deferred Compensation Liability, Current and Noncurrent | | 58.8 | 55.7 | |
Employee Benefit Plan Obligations, Total | | 193 | 178.7 | |
Employee benefit plan obligations | | 44.7 | 37.1 | |
Liability, Defined Benefit Plan, Noncurrent | | (148.3) | (141.6) | |
Liability, Defined Benefit Plan | | 193 | 178.7 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | | |
Defined Benefit Plan, Plan Assets, Amount | | 30 | | |
Defined Benefit Plan, Plan Assets, Contributions by Employer | | 3.6 | | |
Defined Benefit Plan, Plan Assets, Amount | | 31.3 | 30 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | | 7.4 | (9.5) | $ (16.1) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax | | (16.9) | (3.7) | |
Pension and other post-retirement liability adjustments | | (16.9) | (6.6) | 1.1 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax | $ (1) | | | |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax | | (3) | (3.5) | |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax | $ (0.8) | | | |
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components | | 0 | | |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components | | 0 | | |
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation | | 0.1 | | |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation | | (0.1) | | |
Other Postretirement Benefit Plans, Defined Benefit [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year | | 2.1 | 3.4 | |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | | 44.3 | 40.7 | |
Employee benefit plan obligations | | 3.3 | 3.4 | |
Liability, Defined Benefit Plan, Noncurrent | | (41) | (37.3) | |
Liability, Defined Benefit Plan | | 44.3 | 40.7 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | | |
Defined Benefit Plan, Plan Assets, Amount | | 0 | 0 | |
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) | | 0 | 0 | |
Defined Benefit Plan, Plan Assets, Contributions by Employer | | 4 | 3.6 | |
Defined Benefit Plan, Contributions by Plan Participants (Deprecated 2017-01-31) | | 1.9 | 1.9 | |
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) | | 0 | 0 | |
Defined Benefit Plan, Plan Assets, Amount | | 0 | 0 | 0 |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | |
Defined Benefit Plan, Benefit Obligation | | 40.7 | 43.4 | |
Defined Benefit Plan, Service Cost | | 0.1 | 0.1 | 0.2 |
Defined Benefit Plan, Interest Cost | | 1.6 | 1.6 | 1.7 |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | | 0 | 0 | |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | | 5.9 | (0.8) | |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | | 0 | 0 | |
Defined Benefit Plan, Benefits Paid from both Plan Assets and Company Assets | | (5.9) | (5.5) | |
Defined Benefit Plan, Benefit Obligation | | 44.3 | 40.7 | 43.4 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | | (44.3) | (40.7) | |
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax | | (13.6) | (22.9) | |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | | (13.6) | (22.9) | |
Defined Benefit Plan, Amortization of Gain (Loss) | | (3.3) | (3.8) | (3.7) |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | | 0 | (2.2) | (7) |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | | 0 | 0 | 0 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | | 0 | 0 | 0 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | | (1.6) | (4.3) | $ (8.8) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax | | $ 0 | $ 0 | |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate | | 2.58% | 4.08% | 3.97% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | | 4.06% | 3.95% | 3.84% |
Pension Plans, Defined Benefit [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year | | $ (1.1) | $ (0.4) | |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | | 61.8 | 57.3 | |
Employee benefit plan obligations | | 2.9 | 4.2 | |
Liability, Defined Benefit Plan, Noncurrent | | (48.3) | (42) | |
Liability, Defined Benefit Plan | | 51.2 | 46.2 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | | |
Defined Benefit Plan, Plan Assets, Amount | | 30 | 33.1 | |
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) | | 1.6 | 0.3 | |
Defined Benefit Plan, Plan Assets, Contributions by Employer | | 4.9 | 4.3 | |
Defined Benefit Plan, Contributions by Plan Participants (Deprecated 2017-01-31) | | 0 | 0 | |
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) | | (0.3) | (2) | |
Defined Benefit Plan, Plan Assets, Amount | | 31.3 | 30 | $ 33.1 |
Defined Benefit Plan, Plan Assets, Benefits Paid | | 4.9 | 5.7 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | |
Defined Benefit Plan, Benefit Obligation | | 76.2 | 80.1 | |
Defined Benefit Plan, Service Cost | | 1.8 | 2.2 | 2.7 |
Defined Benefit Plan, Interest Cost | | 2 | 2.1 | 2.1 |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | | 0 | 1 | |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | | 8.2 | (0.2) | |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | | (0.8) | (3.3) | |
Defined Benefit Plan, Benefits Paid from both Plan Assets and Company Assets | | (4.9) | (5.7) | |
Defined Benefit Plan, Benefit Obligation | | 82.5 | 76.2 | 80.1 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | | (51.2) | (46.2) | |
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax | | 20.3 | 12.8 | |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | | 21 | 13.4 | |
Defined Benefit Plan, Amortization of Gain (Loss) | | 0.4 | 0.3 | 0.5 |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | | (0.1) | (0.2) | (0.2) |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | | (1.3) | (1.5) | (1.4) |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | | 0 | 0 | 7.1 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | | 2.8 | 2.9 | $ 10.8 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax | | $ 0.7 | $ 0.6 | |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate | | 1.70% | 2.90% | 2.90% |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase | | 3.50% | 3.60% | 3.60% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | | 2.70% | 2.90% | 2.80% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets | | 3.00% | 4.60% | 4.80% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase | | 3.50% | 3.40% | 3.50% |
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | | $ (3.6) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | | (3.5) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | | (4.1) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | | (4.9) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | | (4.5) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | | (22.4) | | |
Non-Qualified Defined Benefit Pension Plan [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Employee benefit plan obligations | | 2.8 | $ 3.8 | |
Liability, Defined Benefit Plan, Noncurrent | | (30.2) | (27.7) | |
Liability, Defined Benefit Plan | | 33 | 31.5 | |
Defined Benefit Plan, Accumulated Benefit Obligation | | 32.9 | 31.3 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | | |
Defined Benefit Plan, Plan Assets, Amount | | 0 | | |
Defined Benefit Plan, Plan Assets, Amount | | 0 | 0 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | |
Defined Benefit Plan, Benefit Obligation | | 31.5 | | |
Defined Benefit Plan, Benefit Obligation | | 33 | 31.5 | |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | | 33 | 31.5 | |
After Medicare Act Subsidy [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | | | | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | |
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | | (3.4) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | | (3.4) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | | (3.4) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | | (3.4) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | | (3.3) | | |
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | | (14.5) | | |
Long term asset [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Defined Benefit Plan, Assets for Plan Benefits | | 0 | 0 | |
Long term asset [Member] | Pension Plans, Defined Benefit [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Defined Benefit Plan, Assets for Plan Benefits | | 0 | 0 | |
Foreign Plan [Member] | Qualified Defined Benefit Pension Plan [Member] | | | | |
Defined Benefit Plan Disclosure [Line Items] | | | | |
Employee benefit plan obligations | | 0.1 | 0.4 | |
Liability, Defined Benefit Plan, Noncurrent | | (18.1) | (14.3) | |
Liability, Defined Benefit Plan | | 18.2 | 14.7 | |
Defined Benefit Plan, Accumulated Benefit Obligation | | 44.6 | 23.7 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | | |
Defined Benefit Plan, Plan Assets, Amount | | 30 | | |
Defined Benefit Plan, Plan Assets, Amount | | 31.3 | 30 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | |
Defined Benefit Plan, Benefit Obligation | | 44.7 | | |
Defined Benefit Plan, Benefit Obligation | | 49.5 | 44.7 | |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | | $ 18.2 | $ 14.7 | |