v3.25.2
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
Jun. 30, 2025
Dec. 31, 2024
Carrying Value [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets $ 1 $ 56
Total liabilities 18 3
Carrying Value [Member] | Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   15
Carrying Value [Member] | Other Assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 1 3
Carrying Value [Member] | Other Accrued Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total liabilities 4  
Carrying Value [Member] | Long-term Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   38
Carrying Value [Member] | Other Long-term Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total liabilities 14 3
Estimated Fair Value [Member] | Quoted Prices in Active Markets (Level 1) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 0 8
Total liabilities 0 0
Estimated Fair Value [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   6
Estimated Fair Value [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Other Assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 0 0
Estimated Fair Value [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Other Accrued Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total liabilities 0  
Estimated Fair Value [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Long-term Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   2
Estimated Fair Value [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Other Long-term Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total liabilities 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 assets 1 48
Total liabilities 18 3
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] | Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   9
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 1 3
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]    
Total liabilities 4  
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   36
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Long-term Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total liabilities 14 3
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 0 0
Total liabilities 0 0
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   0
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other Assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 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]    
Total liabilities 0  
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Marketable Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets   0
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other Long-term Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total liabilities $ 0 $ 0