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Debt - Senior Notes (Details) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended
	Feb. 29, 2020	Jun. 29, 2019	Jul. 04, 2020	Jun. 29, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt, gross			$ 2,328,100,000		$ 2,334,400,000
Loss on extinguishment of debt		$ 10,600,000	21,100,000	$ 10,600,000
Payments of related issuance costs			6,900,000	$ 6,300,000
Senior notes
Debt Instrument [Line Items]
Proceeds from offering	$ 669,100,000
Payments of related issuance costs			$ 5,900,000
Senior notes | 2030 Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 350,000,000.0
Stated coupon rate	3.50%		3.50%
Redemption price	99.774%
Yield to maturity	3.525%
Long-term debt, gross			$ 350,000,000.0
Senior notes | 2049 Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 300,000,000.0
Stated coupon rate	5.25%		5.25%
Redemption price	106.626%
Yield to maturity	4.821%
Long-term debt, gross			$ 625,000,000.0
Senior notes | 2025 Notes
Debt Instrument [Line Items]
Stated coupon rate					5.25%
Redemption price	102.625%
Long-term debt, gross	$ 650,000,000.0				$ 650,000,000.0

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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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