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Summary of Significant Accounting Policies Summary of Signficant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Feb. 23, 2018 | Feb. 24, 2017 | Feb. 26, 2016
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 |  | $ 11.5 | $ 12.3 |
Workers' Compensation Liability, Current |  | 3.0 | 2.4 |
Workers' Compensation Liability, Noncurrent |  | 12.9 | 13.9 |
Workers' Compensation Liability |  | 15.9 | 16.3 |
Worker's Compensation Liability, associated receivable |  | 4.4 | 4.0 |
Product Liability [Abstract] |  |  |  |
Loss Contingency Accrual, Product Liability, Net |  | 5.3 | 6.3 |
Loss Contingency Accrual, Product Liability, associated receivables |  | 2.7 | 2.4 |
Loss Contingency Accrual, Product Liability, Gross |  | 8.0 | 8.7 |
Employee medical, dental and short term liability [Abstract] |  |  |  |
Liability for Claims and Claims Adjustment Expense |  | 3.9 | 4.5 |
Product Warranties [Abstract] |  |  |  |
Product Warranty Accrual, Noncurrent |  | 18.7 | 20.9 |
Environmental Matters [Abstract] |  |  |  |
Accrual for Environmental Loss Contingencies, Gross |  | 3.2 | 3.9 |
Accrual for Environmental Loss Contingencies, Gross |  | $ 3.7 | $ 4.8 |
Accrual for Environmental Loss Contingencies, Discount Rate |  | 3.50% | 4.00% |
Research and Development Expense [Abstract] |  |  |  |
Research and Development Expense |  | $ 44.0 | $ 35.8 | $ 33.0
Financial Instruments [Abstract] |  |  |  |
Debt and Capital Lease Obligations |  | 295.0 | 297.4 |
Balance Sheet Related Disclosures [Abstract] |  |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure |  | 2.1 | 3.5 |
Foreign Currency Contracts, Liability, Fair Value Disclosure |  | (1.4) | (0.9) |
Derivative, Fair Value, Net | [1] | 0.7 | 2.6 |
Derivative, Notional Amount |  | 95.7 | 101.2 |
Income Statement Related Disclosures [Abstract] |  |  |  |
Operating expenses |  | 850.1 | 809.3 | 790.0
Other income (expense), net |  | (21.5) | (11.9) | (16.3)
Derivative Instruments, Gain (Loss) Recognized in Income, Net |  | 1.4 | (0.9) | (1.4)
Fair Value, Measurements, Recurring [Member] |  |  |  |
Cash and Cash Equivalents [Abstract] |  |  |  |
Restricted Cash and Cash Equivalents |  | 2.5 | 2.5 |
Balance Sheet Related Disclosures [Abstract] |  |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure |  | (1.4) | (0.9) |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] |  |  |  |
Cash and Cash Equivalents [Abstract] |  |  |  |
Restricted Cash and Cash Equivalents |  | 2.5 | 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 |  | 2.8 | (1.1) | (0.8)
Operating expenses |  | 0.6 | 0.8 | (0.8)
Other income (expense), net |  | $ (4.8) | 1.2 | $ 3.0
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 |  | $ 316.0 | 330.0 |
Other Current Liabilities [Member] |  |  |  |
Product Liability [Abstract] |  |  |  |
Loss Contingency Accrual |  | 1.3 | 1.4 |
Other Noncurrent Liabilities [Member] |  |  |  |
Product Liability [Abstract] |  |  |  |
Loss Contingency Accrual |  | $ 6.7 | $ 7.3 |
[1] | The notional amounts of the outstanding foreign exchange forward contracts were $95.7 as of February 23, 2018 and $101.2 as of February 24, 2017.

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