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Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	May 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Total carrying value of debt	$ 101,400		$ 97,100
Total fair value of debt	$ 96,800		92,200
Revolving Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Spread on variable rate	0.875%
Long-term debt, gross	$ 0		$ 0
Revolving Credit Facility | Line of Credit | Revolving Credit Facility Due May 17, 2029
Line of Credit Facility [Line Items]
Current borrowing capacity		$ 11,800
Maximum borrowing capacity		$ 14,800
Remaining borrowing capacity	$ 11,800

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Amount of short-term and long-term debt and lease obligation.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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