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Financing Arrangements - Schedule of Carrying and Fair Values of Senior Notes (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Mar. 31, 2024
Feb. 28, 2021
Feb. 29, 2016
Line of Credit Facility [Line Items]        
Senior notes $ 1,883 $ 1,882    
2026 Notes        
Line of Credit Facility [Line Items]        
Long-term debt $ 400 400   $ 400
Debt instrument, interest rate, stated percentage 4.80%     4.80%
2031 Notes        
Line of Credit Facility [Line Items]        
Long-term debt $ 750 750 $ 750  
Debt instrument, interest rate, stated percentage 1.85%   1.85%  
2051 Notes        
Line of Credit Facility [Line Items]        
Long-term debt $ 750 750 $ 750  
Debt instrument, interest rate, stated percentage 2.95%   2.95%  
Senior Notes        
Line of Credit Facility [Line Items]        
Long-term debt $ 1,900 1,900    
Debt instrument, unamortized discount (premium), net (5) (5)   $ (1)
Unamortized debt issuance costs (12) (13)   $ (4)
Fair value of Senior Notes (Level 2) $ 1,569 $ 1,515