Employee Benefit Plan Obligations (Details) - USD ($) $ in Millions | 12 Months Ended |
Feb. 26, 2021 | Feb. 28, 2020 | Feb. 22, 2019 |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Contribution Obligation | $ 12.1 | $ 28.1 | |
Deferred Compensation Liability, Current and Noncurrent | 60.5 | 58.8 | |
Employee Benefit Plan Obligations, Total | 177.8 | 193 | |
Employee benefit plan obligations | 24.9 | 44.7 | |
Liability, Defined Benefit Plan, Noncurrent | (152.9) | (148.3) | |
Liability, Defined Benefit Plan | 177.8 | 193 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | |
Defined Benefit Plan, Plan Assets, Amount | 31.3 | | |
Defined Benefit Plan, Plan Assets, Contributions by Employer | 4.2 | | |
Defined Benefit Plan, Plan Assets, Amount | 33.2 | 31.3 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | (11.7) | (7.4) | $ 9.5 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax | (2.8) | (16.9) | |
Pension and other post-retirement liability adjustments | (4.3) | (16.9) | (6.6) |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax | (1.1) | (3) | |
Other Postretirement Benefit Plans, Defined Benefit [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | 42.7 | 44.3 | |
Employee benefit plan obligations | 3.6 | 3.3 | |
Liability, Defined Benefit Plan, Noncurrent | (39.1) | (41) | |
Liability, Defined Benefit Plan | 42.7 | 44.3 | |
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 | 3.5 | 4 | |
Defined Benefit Plan, Contributions by Plan Participants (Deprecated 2017-01-31) | 2.3 | 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 | 44.3 | 40.7 | |
Defined Benefit Plan, Service Cost | 0.1 | 0.1 | 0.1 |
Defined Benefit Plan, Interest Cost | 1.1 | 1.6 | 1.6 |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | 0 | 0 | |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | 0.5 | 5.9 | |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | 0.2 | 0 | |
Defined Benefit Plan, Benefits Paid from both Plan Assets and Company Assets | (5.8) | (5.9) | |
Defined Benefit Plan, Benefit Obligation | 42.7 | 44.3 | 40.7 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (42.7) | (44.3) | |
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax | (11.1) | (13.6) | |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | (11.1) | (13.6) | |
Defined Benefit Plan, Amortization of Gain (Loss) | (2.1) | (3.3) | (3.8) |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 0 | 0 | (2.2) |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 0 | 0 | 0 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (0.9) | (1.6) | $ (4.3) |
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% | 2.58% | 4.08% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 2.56% | 4.06% | 3.95% |
Pension Plans, Defined Benefit [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | $ 62.5 | $ 61.8 | |
Employee benefit plan obligations | 3.3 | 2.9 | |
Liability, Defined Benefit Plan, Noncurrent | (49.4) | (48.3) | |
Liability, Defined Benefit Plan | 52.7 | 51.2 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | |
Defined Benefit Plan, Plan Assets, Amount | 31.3 | 30 | |
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) | (0.3) | 1.6 | |
Defined Benefit Plan, Plan Assets, Contributions by Employer | 4.1 | 4.9 | |
Defined Benefit Plan, Contributions by Plan Participants (Deprecated 2017-01-31) | 0 | 0 | |
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) | 2.9 | (0.3) | |
Defined Benefit Plan, Plan Assets, Amount | 33.2 | 31.3 | $ 30 |
Defined Benefit Plan, Plan Assets, Benefits Paid | 4.8 | 4.9 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | |
Defined Benefit Plan, Benefit Obligation | 82.5 | 76.2 | |
Defined Benefit Plan, Service Cost | 1.9 | 1.8 | 2.2 |
Defined Benefit Plan, Interest Cost | 1.3 | 2 | 2.1 |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | 0.1 | 0 | |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | 0 | 8.2 | |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | 4.9 | (0.8) | |
Defined Benefit Plan, Benefits Paid from both Plan Assets and Company Assets | (4.8) | (4.9) | |
Defined Benefit Plan, Benefit Obligation | 85.9 | 82.5 | 76.2 |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (52.7) | (51.2) | |
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax | 21.9 | 20.3 | |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | 22.8 | 21 | |
Defined Benefit Plan, Amortization of Gain (Loss) | 1.1 | 0.4 | 0.3 |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 0 | (0.1) | (0.2) |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (0.9) | (1.3) | (1.5) |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 3.4 | 2.8 | $ 2.9 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax | $ 0.9 | $ 0.7 | |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate | 1.70% | 1.70% | 2.90% |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase | 3.50% | 3.50% | 3.60% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 1.70% | 2.70% | 2.90% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets | 3.00% | 3.00% | 4.60% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase | 3.40% | 3.50% | 3.40% |
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | $ 4.2 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 4.8 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 4.9 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 4.4 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 5.2 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 21.7 | | |
Non-Qualified Defined Benefit Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Employee benefit plan obligations | 3 | $ 2.8 | |
Liability, Defined Benefit Plan, Noncurrent | (29.2) | (30.2) | |
Liability, Defined Benefit Plan | 32.2 | 33 | |
Defined Benefit Plan, Accumulated Benefit Obligation | 32.1 | 32.9 | |
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 | 33 | | |
Defined Benefit Plan, Benefit Obligation | 32.2 | 33 | |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 32.2 | 33 | |
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 | 3.6 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 3.5 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 3.4 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 3.3 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 3.2 | | |
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 13.8 | | |
Foreign Plan [Member] | Qualified Defined Benefit Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Employee benefit plan obligations | 0.3 | 0.1 | |
Liability, Defined Benefit Plan, Noncurrent | (20.2) | (18.1) | |
Liability, Defined Benefit Plan | 20.5 | 18.2 | |
Defined Benefit Plan, Accumulated Benefit Obligation | 48.5 | 44.6 | |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] | | | |
Defined Benefit Plan, Plan Assets, Amount | 31.3 | | |
Defined Benefit Plan, Plan Assets, Amount | 33.2 | 31.3 | |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | |
Defined Benefit Plan, Benefit Obligation | 49.5 | | |
Defined Benefit Plan, Benefit Obligation | 53.7 | 49.5 | |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | $ 20.5 | $ 18.2 | |