Debt - Schedule of Debt Balances and Activity (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Debt Balances and Activity [Roll Forward]
Net proceeds from issuance of long-term debt	$ 7,768
Repayments of long-term debt	(479)	$ (223)
Total Debt
Debt Balances and Activity [Roll Forward]
Total debt, beginning balance	78,265
Proceeds from issuances and borrowings	7,768
Repayments	(479)
Reclassifications	0
Other	190
Total debt, ending balance	85,744
Third Party
Debt Balances and Activity [Roll Forward]
Proceeds from issuance of short-term debt	0
Net proceeds from issuance of long-term debt	7,768
Repayments of short-term debt	(479)
Repayments of long-term debt	0
Third Party \| Short-term debt
Debt Balances and Activity [Roll Forward]
Other	(3)
Third Party \| Long-term debt
Debt Balances and Activity [Roll Forward]
Other	193
Third Party \| Total Debt
Debt Balances and Activity [Roll Forward]
Total debt, beginning balance	76,768
Proceeds from issuances and borrowings	7,768
Repayments	(479)
Reclassifications	0
Other	190
Total debt, ending balance	84,247
Affiliates
Debt Balances and Activity [Roll Forward]
Proceeds from issuances and borrowings	0
Repayments	0
Other	0
Short-term debt \| Third Party
Debt Balances and Activity [Roll Forward]
Reclassifications	4,628
Long-term debt \| Third Party
Debt Balances and Activity [Roll Forward]
Reclassifications	(4,628)
Long-term debt \| Affiliates
Debt Balances and Activity [Roll Forward]
Reclassifications	0
Short-term debt \| Third Party
Debt Balances and Activity [Roll Forward]
Short-term debt, beginning balance	4,068
Short-term debt, ending balance	8,214
Long-term debt \| Third Party
Debt Balances and Activity [Roll Forward]
Long-term debt, beginning balance	72,700
Long-term debt, ending balance	76,033
Long-term debt \| Affiliates
Debt Balances and Activity [Roll Forward]
Total debt, beginning balance	1,497
Total debt, ending balance	$ 1,497

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Amount of increase (decrease) in debt instruments, classified as other.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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