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

Long-Term Debt (3.60% Senior Notes due 2022) (Details) - USD ($) $ in Millions	May 14, 2022	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2012
Debt Instrument [Line Items]
Principal Amount		$ 4,976	$ 5,283
Senior Notes \| 3.60% Senior Notes Due 2022
Debt Instrument [Line Items]
Principal Amount		$ 0	$ 250	$ 250
Stated interest rate (percent)	3.60%	3.60%
Debt Instrument, Unamortized Discount				$ 1
Exchange Offer Percentage	100.00%