v3.20.1

Debt 144A due 2028 and Credit Agreement (Details)					3 Months Ended
	Apr. 02, 2020 USD ($)	Mar. 25, 2020 USD ($)	Feb. 07, 2020 USD ($)	Feb. 05, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Debt instrument, face amount				$ 1,200,000,000
Proceeds from debt issuance				1,168,000,000	$ 1,200,000,000	$ 0
Cash				$ 500,000,000	60,000,000
Restricted cash					593,000,000		$ 0
Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Debt instrument, face amount			$ 600,000,000
Fixed interest rate			6.125%
Proceeds from debt issuance			$ 593,000,000
Restricted cash					$ 593,000,000
Senior Secured Loans | First-Lien Term B Loan Facility
Debt Instrument [Line Items]
Debt instrument, face amount		$ 600,000,000
Debt instrument, term		7 years
Proceeds from debt issuance		$ 575,000,000
Mandatory annual repayment percentage					1.00%
Senior Secured Loans | First-Lien Term B Loan Facility | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate					2.75%
Senior Secured Credit Facility | First-Lien Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,000,000,000
Debt instrument, term		5 years
Variable commitment fee for undrawn capacity					0.35%
Debt covenant, Total Leverage Ratio, after year one					2.50
Debt covenant, Total Leverage Ratio, year one					2.25
Debt covenant, Interest Coverage Ratio					3.00
Senior Secured Credit Facility | First-Lien Revolving Credit Facility | Revolving Credit Facility | Subsequent events
Debt Instrument [Line Items]
Proceeds from revolving credit facility	$ 500,000,000
Minimum | Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Required prior notice for debt redemption, term					10 days
Maximum | Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Required prior notice for debt redemption, term					60 days
Redemption prior to February 15, 2023 | Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Debt redemption percentage					100.00%
Debt redemption, basis spread on discount rate					0.50%
Debt redemption, additional make-whole charge					1.00%
Redemption prior to February 15, 2023; limited to 40% of aggregate principal | Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Debt redemption percentage					106.125%
Redemption limitation based on aggregate principal					40.00%
Minimum aggregate principal following redemption					60.00%
Maximum term allowed for redemption following offering					120 days
Redemption after February 14, 2023 | Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Debt redemption percentage					103.063%
Redemption upon change in control | Senior Secured Notes | Second-Lien Notes due 2028, 6.125%
Debt Instrument [Line Items]
Debt redemption percentage					101.00%

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