Summary of Significant Accounting Policies Summary of Signficant Accounting Policies (Details) - USD ($) $ in Millions		12 Months Ended
		Feb. 22, 2019	Feb. 23, 2018	Feb. 24, 2017	Feb. 26, 2016
Accounting Policies [Line Items]
Restricted Cash			$ 2.5		$ 2.5
Fiscal Year [Abstract]
Number of weeks in quarter		P13W	P13W	P13W
Number of weeks in fiscal year		P52W	P52W	P52W
Workers Compensation [Abstract]
Workers' Compensation Liability, net of associated receivables		$ 11.6	$ 11.5
Workers' Compensation Liability, Current		3.0	3.0
Workers' Compensation Liability, Noncurrent		12.7	12.9
Workers' Compensation Liability		15.7	15.9
Worker's Compensation Liability, associated receivable		4.1	4.4
Product Liability [Abstract]
Loss Contingency Accrual, Product Liability, Net		3.3	5.3
Loss Contingency Accrual, Product Liability, associated receivables		1.5	2.7
Loss Contingency Accrual, Product Liability, Gross		4.8	8.0
Employee medical, dental and short term liability [Abstract]
Liability for Claims and Claims Adjustment Expense		4.3	3.9
Product Warranties [Abstract]
Product Warranty Accrual, Noncurrent		14.5	18.7
Environmental Matters [Abstract]
Accrual for Environmental Loss Contingencies, Gross		3.1	3.2
Accrual for Environmental Loss Contingencies, Gross		3.6	$ 3.7
Accrual for Environmental Loss Contingencies, Discount Rate			3.50%
Research and Development Expense [Abstract]
Research and Development Expense		53.7	$ 44.0	$ 35.8
Financial Instruments [Abstract]
Debt and Capital Lease Obligations		487.0	295.0
Balance Sheet Related Disclosures [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure		3.9	2.1
Foreign Currency Contracts, Liability, Fair Value Disclosure		(0.5)	(1.4)
Derivative, Fair Value, Net	[1]	3.4	0.7
Derivative, Notional Amount		124.6	95.7
Income Statement Related Disclosures [Abstract]
Operating expenses		904.3	850.0	810.5
Other income (expense), net		(14.9)	(22.3)	(15.9)
Derivative Instruments, Gain (Loss) Recognized in Income, Net		(4.5)	1.4	(0.9)
Fair Value, Measurements, Recurring [Member]
Accounting Policies [Line Items]
Restricted Cash		3.5	2.5
Balance Sheet Related Disclosures [Abstract]
Foreign Currency Contracts, Liability, Fair Value Disclosure		(0.5)	(1.4)
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Accounting Policies [Line Items]
Restricted Cash		3.5	2.5
Balance Sheet Related Disclosures [Abstract]
Foreign Currency Contracts, Liability, Fair Value Disclosure		0.0	0.0
Forward Contracts [Member]
Income Statement Related Disclosures [Abstract]
Cost of Goods Sold		1.5	2.8	(1.1)
Operating expenses		0.3	0.6	0.8
Other income (expense), net		$ 2.7	(4.8)	$ 1.2
Minimum [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Equity Method Investment, Ownership Percentage		20.00%
Product Warranties [Abstract]
Standard Product Warranty Description		3 years
Maximum [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Equity Method Investment, Ownership Percentage		50.00%
Product Warranties [Abstract]
Standard Product Warranty Description		lifetime
Estimate of Fair Value, Fair Value Disclosure [Member]
Financial Instruments [Abstract]
Long-term Debt, Fair Value		$ 492.0	316.0
Other Current Liabilities [Member]
Product Liability [Abstract]
Loss Contingency Accrual		0.8	1.3
Other Noncurrent Liabilities [Member]
Product Liability [Abstract]
Loss Contingency Accrual		$ 4.0	$ 6.7

[1] The notional amounts of the outstanding foreign exchange forward contracts were $124.6 as of February 22, 2019 and $95.7 as of February 23, 2018.