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Borrowings - Amended and restated credit facility (Details) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 20, 2017 USD ($) | Jul. 02, 2017 USD ($) | Apr. 02, 2017 USD ($) | Jun. 26, 2016 USD ($) | Jul. 02, 2017 USD ($) | Jun. 26, 2016 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |
Loss on extinguishment of debt |  | $ 11,000 |  | $ 19,261,000 | $ 5,593,000 | $ 19,261,000
2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Debt instrument, stated interest rate | 2.00% |  |  |  |  |
Maximum leverage ratio | 4.50 |  |  |  |  |
Maximum secured leverage ratio | 3.50 |  |  |  |  |
Minimum interest coverage ratio | 3.50 |  |  |  |  |
Line of credit, debt issuance cost |  | $ 12,000,000 |  |  | $ 12,000,000 |
2017 Credit Agreement | Revolving Credit Facility |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Debt instrument term | 5 years |  |  |  |  |
Maximum borrowing capacity | $ 1,000,000,000.0 |  |  |  |  |
2017 Credit Agreement | Term Loan |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 750,000,000.0 |  |  |  |  |
2013 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 400,000 |  |  |
London Interbank Offered Rate (LIBOR) | Minimum | 2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.25% |  |  |  |  |
London Interbank Offered Rate (LIBOR) | Maximum | 2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.50% |  |  |  |  |
Federal Funds Effective Swap Rate | 2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |  |
Adjusted LIBOR | 2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Adjusted LIBOR | Minimum | 2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.25% |  |  |  |  |
Adjusted LIBOR | Maximum | 2017 Credit Agreement |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.50% |  |  |  |  |

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