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Stock Plans - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 30, 2024
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Jan. 01, 2023
Class of Stock [Line Items]          
Common shares repurchased   $ 566,000,000 $ 409,000,000    
Payments for repurchase of common stock   $ 568,000,000 $ 399,000,000    
Common Stock | Share Repurchase Program Amended January 1, 2023          
Class of Stock [Line Items]          
Stock repurchase value         $ 6,000,000,000
Common shares repurchased       $ 1,600,000,000  
Number of shares repurchased (in shares)   7.7      
Average cost of shares repurchased (in dollars per share)   $ 72.99      
Aggregate cost of stock repurchases, net of tax   $ 563,000,000      
Remaining share repurchase capacity   $ 3,900,000,000      
Common Stock | Share Repurchase Program Amended January 1, 2023 | Subsequent Event          
Class of Stock [Line Items]          
Payments for repurchase of common stock $ 15,000,000