Debt - Long-Term Debt Obligations (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Face value of long-term debt	$ 55,097	$ 58,000
Total face value of long-term debt	55,097	58,000
Less: current portion of long-term debt	(3,997)	(5,017)
Long-term debt	50,742	52,623
Senior Notes
Debt Instrument [Line Items]
Face value of long-term debt	54,300
Total face value of long-term debt	54,300
Unamortized discount and issuance costs, net	$ (358)	(360)
Weighted average remaining lives term	13 years 7 months 6 days
Senior Notes | 2014 Notes issuance of $6.0 billion
Debt Instrument [Line Items]
Issuance amount	$ 6,000
Face value of long-term debt	2,750	2,750
Total face value of long-term debt	$ 2,750	2,750
Weighted average remaining lives term	14 years 7 months 6 days
Senior Notes | 2014 Notes issuance of $6.0 billion | Minimum
Debt Instrument [Line Items]
Stated Interest Rates	4.80%
Effective Interest Rates	4.93%
Senior Notes | 2014 Notes issuance of $6.0 billion | Maximum
Debt Instrument [Line Items]
Stated Interest Rates	4.95%
Effective Interest Rates	5.12%
Senior Notes | 2017 Notes issuance of $17.0 billion
Debt Instrument [Line Items]
Issuance amount	$ 17,000
Face value of long-term debt	12,000	13,000
Total face value of long-term debt	$ 12,000	13,000
Weighted average remaining lives term	15 years 8 months 12 days
Senior Notes | 2017 Notes issuance of $17.0 billion | Minimum
Debt Instrument [Line Items]
Stated Interest Rates	3.15%
Effective Interest Rates	3.25%
Senior Notes | 2017 Notes issuance of $17.0 billion | Maximum
Debt Instrument [Line Items]
Stated Interest Rates	4.25%
Effective Interest Rates	4.33%
Senior Notes | 2020 Notes issuance of $10.0 billion
Debt Instrument [Line Items]
Issuance amount	$ 10,000
Face value of long-term debt	7,750	9,000
Total face value of long-term debt	$ 7,750	9,000
Weighted average remaining lives term	18 years 4 months 24 days
Senior Notes | 2020 Notes issuance of $10.0 billion | Minimum
Debt Instrument [Line Items]
Stated Interest Rates	1.20%
Effective Interest Rates	1.26%
Senior Notes | 2020 Notes issuance of $10.0 billion | Maximum
Debt Instrument [Line Items]
Stated Interest Rates	2.70%
Effective Interest Rates	2.77%
Senior Notes | 2021 Notes issuance of $18.5 billion
Debt Instrument [Line Items]
Issuance amount	$ 18,500
Face value of long-term debt	15,000	15,000
Total face value of long-term debt	$ 15,000	15,000
Weighted average remaining lives term	13 years 4 months 24 days
Senior Notes | 2021 Notes issuance of $18.5 billion | Minimum
Debt Instrument [Line Items]
Stated Interest Rates	1.00%
Effective Interest Rates	1.14%
Senior Notes | 2021 Notes issuance of $18.5 billion | Maximum
Debt Instrument [Line Items]
Stated Interest Rates	3.25%
Effective Interest Rates	3.31%
Senior Notes | April 2022 Notes issuance of $12.8 billion
Debt Instrument [Line Items]
Issuance amount	$ 12,800
Face value of long-term debt	9,750	11,250
Total face value of long-term debt	$ 9,750	11,250
Weighted average remaining lives term	14 years
Senior Notes | April 2022 Notes issuance of $12.8 billion | Minimum
Debt Instrument [Line Items]
Stated Interest Rates	3.30%
Effective Interest Rates	3.40%
Senior Notes | April 2022 Notes issuance of $12.8 billion | Maximum
Debt Instrument [Line Items]
Stated Interest Rates	4.10%
Effective Interest Rates	4.15%
Senior Notes | December 2022 Notes issuance of $8.3 billion
Debt Instrument [Line Items]
Issuance amount	$ 8,300
Face value of long-term debt	7,000	7,000
Total face value of long-term debt	$ 7,000	7,000
Weighted average remaining lives term	3 years 10 months 24 days
Senior Notes | December 2022 Notes issuance of $8.3 billion | Minimum
Debt Instrument [Line Items]
Stated Interest Rates	4.55%
Effective Interest Rates	4.61%
Senior Notes | December 2022 Notes issuance of $8.3 billion | Maximum
Debt Instrument [Line Items]
Stated Interest Rates	4.70%
Effective Interest Rates	4.74%
Other long-term debt
Debt Instrument [Line Items]
Face value of long-term debt	$ 847	0
Total face value of long-term debt	$ 847	$ 0