v3.26.1
Investments and Fair Value Measurements - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Mar. 31, 2025
Senior Notes | 3.875% Senior Notes due 2028    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument (as a percent) 3.875%  
Senior Notes | Senior Notes due 2029    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument (as a percent) 4.00%  
Senior Notes | Senior Notes due 2033    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument (as a percent) 5.95%  
Senior Notes | Senior Notes due 2035    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument (as a percent) 5.95%  
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt $ 3,964 $ 4,026
Carrying Amount | Line of Credit | Credit Agreement | Term Loan A-1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 714 1,526
Carrying Amount | Line of Credit | Credit Agreement | Term Loan A-2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 750 0
Carrying Amount | Senior Notes | 3.875% Senior Notes due 2028    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 700 700
Carrying Amount | Senior Notes | Senior Notes due 2029    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 500 500
Carrying Amount | Senior Notes | Senior Notes due 2033    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 650 650
Carrying Amount | Senior Notes | Senior Notes due 2035    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 650 650
Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 3,937 3,954
Estimated Fair Value | Line of Credit | Credit Agreement | Term Loan A-1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 712 1,521
Estimated Fair Value | Line of Credit | Credit Agreement | Term Loan A-2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 743 0
Estimated Fair Value | Senior Notes | 3.875% Senior Notes due 2028    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 680 666
Estimated Fair Value | Senior Notes | Senior Notes due 2029    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 484 471
Estimated Fair Value | Senior Notes | Senior Notes due 2033    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt 663 651
Estimated Fair Value | Senior Notes | Senior Notes due 2035    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt $ 655 $ 645