Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Financial Assets And Liabilities Carried At Fair Value

A summary of financial assets and liabilities that are measured at fair value on a recurring basis were as follows ($ in millions):

	Year Ended December 31		Quoted Prices in Active Market (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
2020:
Assets:
Available-for-sale debt securities	$	27	$	—	$	27	$	—
Investment in equity securities	176		6		—		—
Liabilities:
Cross-currency swap derivative contracts	622		—		622		—
Deferred compensation plans	111		—		111		—
2019:
Assets:
Available-for-sale debt securities	$	34	$	—	$	34	$	—
Investment in equity securities	111		—		—		—
Cross-currency swap derivative contracts	26		—		26		—
Liabilities:
Cross-currency swap derivative contracts	112		—		112		—
Deferred compensation plans	70		—		70		—

Carrying Amounts And Fair Values Of Financial Instruments

The carrying amounts and fair values of the Company’s financial instruments as of December 31 were as follows ($ in millions):

	2020				2019
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Available-for-sale debt securities	$	27	$	27	$	34	$	34
Investment in equity securities	176		176		111		111
Cross-currency swap derivative contracts	—		—		26		26
Liabilities:
Cross-currency swap derivative contracts	622		622		112		112
Notes payable and current portion of long-term debt	11		11		212		212
Long-term debt	21,193		23,004		21,517		21,897