Employee Benefit Plan Obligations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 22, 2013	Feb. 24, 2012	Feb. 25, 2011
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Obligation	$ 13.3	$ 9.8
Deferred Compensation Liability, Current and Noncurrent	39.5	37.1
Employee Benefit Plan Obligation, Current Portion	23.8	22.6
Employee Benefit Plan Obligation, Long-Term Portion	157.8	161.1
Employee Benefit Plan Obligations, Total	181.6	183.7
Employee benefit plan obligations	(23.8)	(22.6)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(158.0)	(161.1)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	49.1
Defined Benefit Plan, Fair Value of Plan Assets	50.2	49.1
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax	9.0	(8.7)
Minimum pension liability	0	0.5	15.9
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax		20.8
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax	1.4	1.1
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	0.5
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation	(0.4)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amounts Recognized in Balance Sheet	51.5	45.9
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0.2	0
Employee benefit plan obligations	(2.9)	(2.4)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(48.8)	(43.5)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	49.1	50.2
Defined Benefit Plan, Actual Return on Plan Assets	4.5	2.0
Defined Benefit Plan, Contributions by Employer	3.7	3.3
Defined Benefit Plan, Contributions by Plan Participants	0	0
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(1.6)	(1.1)
Defined Benefit Plan, Benefits Paid	(5.5)	(5.3)
Defined Benefit Plan, Fair Value of Plan Assets	50.2	49.1	50.2
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	95.0	87.3
Defined Benefit Plan, Service Cost	3.0	2.1	2.0
Defined Benefit Plan, Interest Cost	3.7	4.2	4.3
Defined Benefit Plan, Plan Amendments	0	0.1
Defined Benefit Plan, Actuarial Gain (Loss)	6.3	7.5
Defined Benefit Plan, Contributions by Plan Participants	0	0
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received	0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(1.1)	(1.5)
Defined Benefit Plan, Other Changes	0.4	0.6
Defined Benefit Plan, Benefits Paid from both Plan Assets and Company Assets	(5.6)
Defined Benefit Plan, Benefit Obligation	101.7	95.0	87.3
Defined Benefit Plan, Funded Status of Plan	(51.5)	(45.9)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	22.3	20.0
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	23.0	20.8
Defined Benefit Plan, Amortization of Gains (Losses)	1.1	0.5	0.9
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.1	0.2	0.1
Defined Benefit Plan, Expected Return on Plan Assets	(2.6)	(3.2)	(2.8)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	0	0	(0.9)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	0.1	0	0.1
Defined Benefit Plan, Special Termination Benefits	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost	5.4	3.8	3.7
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax	4.8	8.9	(1.6)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax	0.7	0.8
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	0	0	(0.2)
Minimum pension liability	(3.6)	(8.3)	2.2
Total recognized in net periodic benefit cost and other comprehensive income (loss) before tax	9.0	12.1	1.5
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	0	0.1	0.8
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.60%	4.20%	5.10%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	3.00%	2.90%	3.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	4.20%	5.10%	5.30%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	5.00%	3.10%	4.90%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	2.90%	3.00%	3.00%
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	(9.3)
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	(9.3)
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	(6.0)
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	(5.9)
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	(6.1)
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	(33.9)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amounts Recognized in Balance Sheet	77.3	90.9
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0	0
Employee benefit plan obligations	(4.6)	(7.0)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(72.7)	(83.9)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Defined Benefit Plan, Actual Return on Plan Assets	0	0
Defined Benefit Plan, Contributions by Employer	5.8	6.1
Defined Benefit Plan, Contributions by Plan Participants	5.9	6.5
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received	1.2	0.9
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	0	0
Defined Benefit Plan, Benefits Paid	(12.9)	(13.5)
Defined Benefit Plan, Fair Value of Plan Assets	0	0	0
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	90.9	110.5
Defined Benefit Plan, Service Cost	0.9	1.0	1.2
Defined Benefit Plan, Interest Cost	3.8	5.6	7.1
Defined Benefit Plan, Plan Amendments	0	(20.9)
Defined Benefit Plan, Actuarial Gain (Loss)	(12.4)	0.9
Defined Benefit Plan, Contributions by Plan Participants	5.9	6.5
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received	1.2	0.9
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(0.1)	(0.1)
Defined Benefit Plan, Other Changes	0	0
Defined Benefit Plan, Benefit Obligation	77.3	90.9	110.5
Defined Benefit Plan, Funded Status of Plan	(77.3)	(90.9)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	(2.4)	10.3
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	(47.6)	(44.2)
Defined Benefit Plan, Amortization of Gains (Losses)	0.2	0.1	0.1
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(9.3)	(8.6)	(8.1)
Defined Benefit Plan, Expected Return on Plan Assets	0	0	0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	(0.1)	(2.9)	(0.1)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	0.1	0	0
Defined Benefit Plan, Special Termination Benefits	0	0.1	0.1
Defined Benefit Plan, Net Periodic Benefit Cost	(4.4)	(4.7)	0.3
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax	(12.4)	0.9	2.1
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax	(45.2)	(54.5)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	0	0	0
Minimum pension liability	3.3	8.6	14.2
Total recognized in net periodic benefit cost and other comprehensive income (loss) before tax	(7.7)	(13.3)	(13.9)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	0	(20.9)	(24.4)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.82%	4.34%	5.34%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	4.31%	5.30%	5.57%
Non-Qualified Defined Benefit Pension Plan [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0	0
Employee benefit plan obligations	(2.8)	(2.3)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(30.9)	(29.0)
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(33.7)	(31.3)
Defined Benefit Plan, Accumulated Benefit Obligation	31.6	29.1
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	33.7	31.3
Defined Benefit Plan, Funded Status of Plan	(33.7)	(31.3)
Qualified Defined Benefit Pension Plan [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0	0
Employee benefit plan obligations	0	0
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(1.2)	(0.7)
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(1.2)	(0.7)
Defined Benefit Plan, Accumulated Benefit Obligation	9.9	9.3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	8.7	8.7
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	9.9	9.4
Defined Benefit Plan, Funded Status of Plan	(1.2)	(0.7)
Qualified Defined Benefit Pension Plan [Member] | Foreign Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0.2	0
Employee benefit plan obligations	(0.1)	(0.1)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(16.7)	(13.8)
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(16.6)	(13.9)
Defined Benefit Plan, Accumulated Benefit Obligation	53.5	50.9
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	41.5	40.4
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	58.1	54.3
Defined Benefit Plan, Funded Status of Plan	(16.6)	(13.9)
Before 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 Payments, Next Twelve Months	(4.8)
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	(5.3)
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	(5.3)
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	(5.4)
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	(5.5)
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	(28.9)
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 Payments, Next Twelve Months	(0.1)
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	(0.1)
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	(0.1)
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	(0.1)
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	(0.1)
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	(0.2)
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 Payments, Next Twelve Months	(4.7)
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	(5.2)
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	(5.2)
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	(5.3)
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	(5.4)
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	$ (28.7)