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Financing Arrangements - Narrative (Details) - Commercial paper - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Long-term debt      
Maximum aggregate principal amount $ 1,000    
Average amount of commercial paper outstanding $ 118 $ 460  
Weighted average interest rate 5.51% 4.79%  
Weighted average maturity 8 days 7 days  
Short-term borrowings $ 16   $ 327
Basis spread 5.45%   5.50%
Weighted average maturity of outstanding balance 4 days   11 days