Long-Term and Other Debt - Maturities of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Face Value	$ 8,772
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	44
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	44
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Three	3,934
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four	1,800
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	1,750
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	1,200
Unamortized deferred financing costs and discount/premium	82
Total long-term debt outstanding	8,690	$ 9,303
Capital Lease Obligations
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	2
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Three	2
Term Loan \| Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	42
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Three	42
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four	3,934
Senior Secured Revolver, maturing 2018 \| Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four	0
Senior Secured Notes, maturing 2025 \| Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	1,250
Senior Unsecured Notes Maturing 2025 [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	550
Senior Secured Euro Notes, maturing 2026 \| Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	367
Senior Unsecured Euro Notes, Maturing 2026 \| Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	283
Senior Unsecured Notes, Maturing 2026 [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five	1,100
Senior Unsecured Notes, Maturing 2028 [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	700
Senior Unsecured Euro Notes, Maturing 2029 [Member] [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	$ 500

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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Amount of long-term debt and lease obligation, including portion classified as current.

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