Fair Value Measurements (Schedule of the Carrying Amount and Estimated Fair Value of the Company's Financial Instruments that are Recorded at Fair Value on a Recurring Basis) (Details) - Recurring [Member] - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	$ 7	$ 24
Carrying Value [Member] | Other Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	5	9
Carrying Value [Member] | Other Long-Term Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	2	15
Estimated Fair Value [Member] | Quoted Price In Active Markets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	0	0
Estimated Fair Value [Member] | Quoted Price In Active Markets (Level 1) [Member] | Other Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	0	0
Estimated Fair Value [Member] | Quoted Price In Active Markets (Level 1) [Member] | Other Long-Term Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	0	0
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	7	24
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	5	9
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Long-Term Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	2	15
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	0	0
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	0	0
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other Long-Term Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap contracts	$ 0	$ 0