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Long-Term Debt (Narrative) (Details) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 02, 2018 USD ($) | Nov. 24, 2014 USD ($) | Oct. 30, 2014 | Dec. 29, 2017 USD ($) loan | Dec. 30, 2016 USD ($) | Jan. 01, 2016 USD ($) | Jan. 02, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  | $ 786.0 | $ 355.0 | $ 555.0 |
Long-term Debt |  |  |  | 913.9 | 619.9 |  |
Repayments of Debt |  |  |  | $ 495.4 | 465.3 | $ 555.2 |
Interest Maturity Period, Variable Rate |  |  |  | 1 month |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  | $ 785.5 | 489.6 |  |
Debt Instrument, Redemption, Prior to Sept 1, 2024 [Member] | US Treasury Rate [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate |  |  |  | 0.40% |  |  |
Promissory Notes And Other [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  |  | $ 1.2 | 0.8 |  |
Promissory Notes And Other [Member] | Long-term Debt [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  | 0.8 | 0.5 |  |
Uncommitted Facilities [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  |  | 128.0 | 130.0 |  |
Uncommitted Facilities [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving Credit Facility, Current Borrowing Capacity |  |  |  | $ 75.0 |  |  |
Credit facility interest margin on stated base rate |  |  |  | 1.00% |  |  |
Number Of Revolving Loan Facilities | loan |  |  |  | 2 |  |  |
Short-term Debt |  |  |  | $ 128.0 | $ 130.0 |  |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |  |  |  | 2.24% | 1.65% |  |
Senior Notes 4.75% December 2024 [Member] | Debt Instrument, Redemption, Prior to Sept 1, 2024 [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 100.00% |  |  |
Senior Notes 4.75% December 2024 [Member] | Debt Instrument, Redemption, After Sept 1, 2024 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 100.00% |  |  |
Senior Notes 4.75% December 2024 [Member] | Change of Control Period [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  | 101.00% |  |  |
Senior Notes 4.75% December 2024 [Member] | Senior Notes [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Notes Shelf Registration date |  |  | Oct. 30, 2014 |  |  |  |
Debt Instrument, Issuance Date |  | Nov. 24, 2014 |  |  |  |  |
Debt Instrument, Face Amount |  | $ 400.0 |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  |  |  | $ 396.9
Discount on Notes Offering Price, Percentage |  |  |  |  |  |  | 0.795%
Debt Issuance Cost |  |  |  |  |  |  | $ 3.0
Underwriting discount |  |  |  |  |  |  | 2.6
Debt Instrument, Maturity Date |  |  |  | Dec. 01, 2024 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 4.75% |  |  |
2012 Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility term period, years |  | 5 years |  |  |  |  |
Revolving Credit Facility, Current Borrowing Capacity |  | $ 700.0 |  |  |  |  |
2012 Credit Facility [Member] | Term Loan [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility term period, years |  | 5 years |  |  |  |  |
Revolving Credit Facility, Current Borrowing Capacity |  | $ 700.0 |  |  |  |  |
Repayments of Debt |  |  |  |  |  |  | 638.8
2014 Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  | Nov. 24, 2014 |  |  |
Credit facility term period, years |  | 5 years |  |  |  |  |
Recognition of Debt Issuance Costs |  |  |  |  |  |  | 1.6
Unsecured revolving credit facility, expiration date |  |  |  | Nov. 24, 2019 |  |  |
Covenant Ratio - Minimum Interest Coverage |  |  |  | 3.50 |  |  |
Covenant Ratio - Maximum Leverage |  |  |  | 3.00 |  |  |
Covenant Ratio Increase upon acquisition |  |  |  | 0.50 |  |  |
Debt Instrument, Covenant Compliance |  |  |  | The Company was in compliance with these covenants at the end of fiscal 2017. |  |  |
2014 Credit Facility [Member] | Reserve Adjusted Fixed Per Annum Rate [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate |  |  |  | 1.00% |  |  |
2014 Credit Facility [Member] | Reserve Adjusted Fixed Per Annum Rate [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate |  |  |  | 1.75% |  |  |
2014 Credit Facility [Member] | Federal Funds Effective Swap Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate |  |  |  | 0.50% |  |  |
2014 Credit Facility [Member] | Reserve Adjusted One Month LIBOR [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit Facility Incremental Fixed Margin Rate |  |  |  | 1.00% |  |  |
2014 Credit Facility [Member] | Reserve Adjusted One Month LIBOR [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate |  |  |  | 0.00% |  |  |
2014 Credit Facility [Member] | Reserve Adjusted One Month LIBOR [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate |  |  |  | 0.75% |  |  |
2014 Credit Facility [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  | 0.10% |  |  |
2014 Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  | 0.30% |  |  |
2014 Credit Facility [Member] | Term Loan [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Revolving Credit Facility Additional Borrowing Capacity |  |  |  | $ 500.0 |  |  |
2014 Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term Debt |  |  |  | $ 389.0 | $ 94.0 |  |
Long-term Debt, Weighted Average Interest Rate, at Point in Time |  |  |  | 2.55% | 1.80% |  |
2014 Credit Facility [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving Credit Facility, Current Borrowing Capacity |  |  |  | $ 1,000.0 |  |  |
Proceeds from Lines of Credit |  |  |  |  |  |  | 307.0
Term Loan [Member] | Nonoperating Income (Expense) [Member] | 2012 Credit Facility [Member] | Term Loan [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Write off of unamortized debt issuance costs |  |  |  |  |  |  | $ 2.7
The Bank of Nova Scotia [Member] | Subsequent Event [Member] | Two Thousand Eighteen Interim Credit Facility [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving Credit Facility, Current Borrowing Capacity | $ 300.0 |  |  |  |  |  |
Unsecured Revolving Credit Facility Additional Borrowing Capacity | 300.0 |  |  |  |  |  |
Long-term Debt | $ 300.0 |  |  |  |  |  |
The Bank of Nova Scotia [Member] | Subsequent Event [Member] | Two Thousand Eighteen Interim Credit Facility [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member] | Reserve Adjusted Fixed Per Annum Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate | 1.125% |  |  |  |  |  |
The Bank of Nova Scotia [Member] | Subsequent Event [Member] | Two Thousand Eighteen Interim Credit Facility [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate | 0.50% |  |  |  |  |  |
The Bank of Nova Scotia [Member] | Subsequent Event [Member] | Two Thousand Eighteen Interim Credit Facility [Member] | Unsecured Debt [Member] | Revolving Credit Facility [Member] | Reserve Adjusted One Month LIBOR [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest margin on stated base rate | 0.125% |  |  |  |  |  |
Interest Maturity Period, Variable Rate | 1 month |  |  |  |  |  |

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