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Capital Structure - Common Stock, Share Repurchases and Retirement of Treasury Stock (Details) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 30, 2024
Jan. 19, 2024
Dec. 27, 2023
Nov. 08, 2023
Apr. 27, 2023
Apr. 01, 2023
Jan. 31, 2024
Jun. 30, 2023
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Nov. 06, 2023
Jun. 22, 2023
Dec. 06, 2021
Equity, Class of Treasury Stock [Line Items]                                  
Quarterly dividends per share (usd per share)                       $ 0.3775 $ 0.350 $ 0.325      
Dividends paid per share (in usd per share)                       1.51 1.40 1.30      
Common stock, dividends, proposed annual amount, per share (usd per share)                       $ 1.30 $ 1.40 $ 1.51      
Common stock, annual dividends increase, percentage                       8.00% 8.00% 8.00%      
Eligible compensation withholding, minimum, percentage                       1.00%          
Eligible compensation withholding, maximum, percentage                       10.00%          
Market value on offering date percentage                       90.00%          
Exercise price as a percentage of fair value (as a percent)           90.00%         95.00% 90.00%          
Increase in shares available for issuance under the ESPP (in shares)         4,400,000                        
Treasury stock reserved for issuance under the ESPP (in shares)                   6,702,125   6,702,125          
Shares repurchased recorded in treasury                       $ 1,160,000,000 [1] $ 595,000,000 $ 44,000,000      
Retirement of treasury stock (in shares)                   157,676,142   0          
Retirement of treasury stock                   $ 5,000,000,000              
Treasury Stock                                  
Equity, Class of Treasury Stock [Line Items]                                  
Shares repurchased recorded in treasury                       $ 1,043,000,000 [1] $ 595,000,000 $ 44,000,000      
Retirement of treasury stock (in shares)                       157,676,142          
Retirement of treasury stock                       $ (5,009,000,000)          
Additional Paid-In Capital                                  
Equity, Class of Treasury Stock [Line Items]                                  
Shares repurchased recorded in treasury [1]                       117,000,000          
Retirement of treasury stock                       5,008,000,000          
November 2023 Accelerated Share Repurchase Agreements                                  
Equity, Class of Treasury Stock [Line Items]                                  
Accelerated share repurchases, agreement amount                             $ 950,000,000    
Accelerated share repurchases, paid                             $ (950,000,000)    
Shares, repurchased (in shares)     13,181,918 4,494,224                          
November 2023 Accelerated Share Repurchase Agreements | Treasury Stock                                  
Equity, Class of Treasury Stock [Line Items]                                  
Shares repurchased recorded in treasury     $ 833,000,000                            
November 2023 Accelerated Share Repurchase Agreements | Additional Paid-In Capital                                  
Equity, Class of Treasury Stock [Line Items]                                  
Shares repurchased recorded in treasury     $ 117,000,000                            
2021 Capital Allocation Plan                                  
Equity, Class of Treasury Stock [Line Items]                                  
Stock repurchase program, authorized amount                                 $ 1,000,000,000
2023 Capital Allocation Plan                                  
Equity, Class of Treasury Stock [Line Items]                                  
Stock repurchase program, authorized amount                   $ 2,700,000,000   $ 2,700,000,000       $ 2,700,000,000  
Target allocation, return to shareholders, percent of cash available               80.00%                  
Average price paid per share (in shares)                       $ 39.56          
Shares repurchased                       $ 1,200,000,000          
Open market repurchases                                  
Equity, Class of Treasury Stock [Line Items]                                  
Average price paid per share (in shares)                         $ 40.48 $ 40.85      
Shares repurchased                       $ 200,000,000 $ 595,000,000 $ 44,000,000      
Subsequent Event                                  
Equity, Class of Treasury Stock [Line Items]                                  
Common stock, dividends, proposed annual amount, per share (usd per share)   $ 1.63                              
Dividends per common share (in usd per share)   $ 0.4075                              
Subsequent Event | Treasury Stock                                  
Equity, Class of Treasury Stock [Line Items]                                  
Retirement of treasury stock (in shares)             770,205                    
Subsequent Event | November 2023 Accelerated Share Repurchase Agreements                                  
Equity, Class of Treasury Stock [Line Items]                                  
Shares, repurchased (in shares) 770,205                                
Subsequent Event | 2023 Capital Allocation Plan                                  
Equity, Class of Treasury Stock [Line Items]                                  
Stock repurchase program, authorized amount             $ 2,700,000,000                    
Stock repurchase program, remaining amount             $ 1,500,000,000                    
Scenario, Plan | Subsequent Event                                  
Equity, Class of Treasury Stock [Line Items]                                  
Common stock, dividends, proposed annual amount, per share (usd per share)                 $ 1.63                
Common stock, annual dividends increase, percentage                 8.00%                
Minimum                                  
Equity, Class of Treasury Stock [Line Items]                                  
Annual dividend growth rate, percentage                       7.00%          
Maximum                                  
Equity, Class of Treasury Stock [Line Items]                                  
Annual dividend growth rate, percentage                       9.00%          
Long-term incentive plans                                  
Equity, Class of Treasury Stock [Line Items]                                  
Long-term incentive plans (in shares)                   27,362,083   27,362,083          
[1] Includes excise tax accrued of $10 million as of December 31, 2023