Debt - Narrative (Details) R in Millions				1 Months Ended			3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Apr. 04, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jul. 28, 2022 USD ($)	Jul. 28, 2022 ZAR (R)	Apr. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Apr. 01, 2021 USD ($)
Line of Credit Facility [Line Items]
Loss on extinguishment of debt							$ 20,000,000	$ 23,000,000	$ 21,000,000	$ 57,000,000
Term Loan Facility
Line of Credit Facility [Line Items]
Original principal	$ 1,300,000,000						1,300,000,000		1,300,000,000
Term Loan Facility | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Cash Flow Revolver
Line of Credit Facility [Line Items]
Proceeds from issuance of debt						$ 85,000,000
Repayments of debt							15,000,000
Long-term debt	$ 70,000,000						70,000,000		70,000,000
Senior Notes due 2029
Line of Credit Facility [Line Items]
Original principal	$ 1,075,000,000		$ 1,075,000,000				$ 1,075,000,000	$ 1,075,000,000	$ 1,075,000,000	$ 1,075,000,000
Interest rate	4.625%		4.625%				4.625%	4.625%	4.625%	4.625%
Senior Notes due 2026
Line of Credit Facility [Line Items]
Loss on extinguishment of debt			$ 30,000,000
Original principal			615,000,000					$ 615,000,000		$ 615,000,000
Amortization of debt premium			$ 21,000,000
Senior Notes due 2025
Line of Credit Facility [Line Items]
Loss on extinguishment of debt									$ 22,000,000
Original principal											$ 450,000,000
Amortization of debt premium									19,000,000
2022 Term Loan Facility
Line of Credit Facility [Line Items]
Loss on extinguishment of debt							$ 20,000,000		21,000,000
Original principal	$ 400,000,000	$ 400,000,000					400,000,000		400,000,000
Amortization of debt premium							18,000,000		18,000,000
Debt instrument, term		7 years
Interest rate floor		0.50%
2022 Term Loan Facility | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.25%	2.25%
2022 Term Loan Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate		3.25%
6.5% Senior Secured Notes due 2025 | Senior Notes
Line of Credit Facility [Line Items]
Original principal	$ 500,000,000						$ 500,000,000		$ 500,000,000
Interest rate	6.50%						6.50%		6.50%
Revolving Credit Facility | Standard Bank Revolver | Subsequent Event
Line of Credit Facility [Line Items]
Proceeds from issuance of debt				$ 25,000,000	R 400
Revolving Credit Facility | Term Loan Facility
Line of Credit Facility [Line Items]
Loss on extinguishment of debt									$ 4,000,000	1,000,000
Repayment of debt										$ 61,000,000