Fair Value Measurements (Carrying Amounts and Fair Values of Other Financial Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Carrying Amount
Debt obligations:
Notes payable and current portion of long-term debt	$ 1,571	$ 591
Long-term debt	18,261	19,086
Fair Value
Debt obligations:
Notes payable and current portion of long-term debt	1,551	584
Long-term debt	$ 15,606	$ 16,079

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

No definition available.

Name:	us-gaap_ShorttermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant