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Debt - Schedule of Debt Outstanding (Details) - USD ($) $ in Millions	Feb. 01, 2024	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Current portion of debt		$ 3,062	$ 4,049
Long-term debt		28,560	27,880
Total debt(c)		31,622	31,929
Debt fair value adjustments		89	187
$3.5 billion credit facility due August 20, 2027
Debt Instrument [Line Items]
Current portion of debt		0	0
Maximum borrowing capacity		3,500
Commercial paper notes(a)
Debt Instrument [Line Items]
Current portion of debt		$ 735	$ 1,989
Weighted average interest rate		5.52%	5.68%
Current portion of other debt
Debt Instrument [Line Items]
Current portion of debt		$ 66	$ 49
EPC Building, LLC, promissory note, 3.967%, due 2023 through 2035 | EPC Building LLC
Debt Instrument [Line Items]
Long-term debt		$ 300	311
Interest rate		3.967%
Trust I preferred securities, 4.75%, due March 2028(b) | Capital Trust I
Debt Instrument [Line Items]
Current portion of debt		$ 111	111
Long-term debt		$ 110	110
Interest rate		4.75%
Other
Debt Instrument [Line Items]
Long-term debt		$ 161	204
Senior notes
Debt Instrument [Line Items]
Long-term debt		27,989	27,255
Net proceeds from debt issuance	$ 2,230
Senior notes | 4.15% due February 2024
Debt Instrument [Line Items]
Current portion of debt		0	$ 650
Interest rate			4.15%
Senior notes | 4.30% due May 2024
Debt Instrument [Line Items]
Current portion of debt		0	$ 600
Interest rate			4.30%
Senior notes | 4.25% due September 2024
Debt Instrument [Line Items]
Current portion of debt		$ 650	$ 650
Interest rate		4.25%
Senior notes | 5.00% due February 2029
Debt Instrument [Line Items]
Long-term debt	$ 1,250
Interest rate	5.00%
Senior notes | 5.40% due February 2034
Debt Instrument [Line Items]
Long-term debt	$ 1,000
Interest rate	5.40%
Senior notes | 4.30% due June 2025
Debt Instrument [Line Items]
Current portion of debt		$ 1,500	$ 0
Interest rate		4.30%

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