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Fair Value Measurements - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Jun. 05, 2024
May 13, 2024
Dec. 31, 2023
May 23, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Carrying amount of debt $ 20,368     $ 22,613  
Fair value of debt 18,020     20,998  
Commercial Paper          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Carrying amount of debt 529     1,954  
Fair value of debt 529     1,954  
Other Short-Term Debt          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Carrying amount of debt 0     1,600  
Fair value of debt $ 0     1,600  
3.65% Senior Notes due May 23, 2025 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.65%        
Carrying amount of debt $ 1,249     1,246  
Fair value of debt $ 1,245     1,227  
3.75% Senior Notes due December 1, 2025 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.75%       3.65%
Carrying amount of debt $ 1,249     1,248  
Fair value of debt $ 1,241     1,229  
4.00% Senior Notes due September 15, 2027 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 4.00%       4.00%
Carrying amount of debt $ 1,492     1,489  
Fair value of debt $ 1,478     1,474  
3.10% Senior Notes due September 15, 2027 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.10%        
Carrying amount of debt $ 498     498  
Fair value of debt $ 481     477  
2028 Senior Notes (3.625% senior notes due September 1, 2028) | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.625% 3.625%      
Carrying amount of debt $ 937     920  
Fair value of debt $ 960     915  
3.75% Senior Notes due September 21, 2028 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.75%        
Carrying amount of debt $ 596     596  
Fair value of debt $ 578     584  
4.35% Senior Notes due June 15, 2029 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 4.35%       4.35%
Carrying amount of debt $ 1,243     1,241  
Fair value of debt $ 1,224     1,246  
2.10% Senior Notes due June 15, 2030 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 2.10%        
Carrying amount of debt $ 1,240     1,238  
Fair value of debt $ 1,081     1,082  
5.25% Senior Notes due June 15, 2031 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 5.25%   5.25%    
Carrying amount of debt $ 743     0  
Fair value of debt $ 758     0  
1.85% Senior Notes due September 15, 2032 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 1.85%        
Carrying amount of debt $ 1,488     1,486  
Fair value of debt $ 1,190     1,205  
4.60% Senior Notes due March 15, 2033 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 4.60%       4.60%
Carrying amount of debt $ 1,490     1,489  
Fair value of debt $ 1,441     1,499  
2.65% Senior Notes due September 15, 2040 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 2.65%        
Carrying amount of debt $ 1,233     1,232  
Fair value of debt $ 874     935  
4.25% Senior Notes due September 21, 2048 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 4.25%        
Carrying amount of debt $ 1,233     1,232  
Fair value of debt $ 1,011     1,125  
3.00% Senior Notes due June 15, 2050 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.00%        
Carrying amount of debt $ 1,223     1,222  
Fair value of debt $ 798     898  
4.95% Senior Notes due June 15, 2052 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 4.95%       4.95%
Carrying amount of debt $ 1,467     1,466  
Fair value of debt $ 1,343     1,503  
3.00% Senior Notes due September 15, 2060 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 3.00%        
Carrying amount of debt $ 1,473     1,472  
Fair value of debt $ 877     1,019  
5.20% Senior Notes due June 15, 2062 | Senior Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Interest rate, stated percentage (in percentage) 5.20%       5.20%
Carrying amount of debt $ 985     984  
Fair value of debt $ 911     $ 1,026