Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Debt - Credit Agreement (Details) - USD ($)	1 Months Ended	9 Months Ended
Debt - Credit Agreement (Details) - USD ($)	Aug. 31, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 31, 2017	Aug. 08, 2017
Debt Instrument [Line Items]
Borrowings under Term Loan Facility		$ 0	$ 250,000,000
Payment of related issuance costs		0	11,700,000
Long-term debt, gross		1,968,800,000		$ 1,973,400,000
Prior credit agreement
Debt Instrument [Line Items]
Repayments of amounts outstanding		$ 0	$ 468,700,000
Credit Agreement — Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Facility fee		0.125%
Credit Agreement — Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Facility fee		0.30%
Credit agreement \| Credit Agreement — Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 1,750,000,000.00
Borrowings outstanding under Revolving Credit Facility		$ 0		0
Credit agreement \| Credit Agreement — Revolving Credit Facility \| Prior credit agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,250,000,000.00
Credit agreement \| Credit Agreement — Term Loan Facility \| Term Loan Facility
Debt Instrument [Line Items]
Debt instrument, face amount					$ 250,000,000.0
Borrowings under Term Loan Facility	250,000,000
Payment of related issuance costs	5,700,000
Repayments of amounts outstanding		4,700,000
Long-term debt, gross		$ 243,800,000		$ 248,400,000
Credit agreement \| Credit Agreement — Term Loan Facility \| Prior credit agreement
Debt Instrument [Line Items]
Debt instrument, face amount	500,000,000.0
Repayments of amounts outstanding	$ 453,100,000