Debt and Credit Agreements (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Debt Profile

DEBT PROFILE

													Total
PRINCIPAL AMOUNT BY EXPECTED MATURITY (dollars in millions)	2021		2022		2023		2024		2025		Thereafter		long- term		Total
Bonds	$	275	$	—	$	613	$	297	$	—	$	470	$	1,380	$	1,655
Loans		—		366		—		—		366		—		732		732
Commercial papers		—		—		—		—		—		—		—		—
Other short-term debt		27		—		—		—		—		—		—		27
Total principal amount	$	302	$	366	$	613	$	297	$	366	$	470	$	2,112	$	2,414	1)

1) The difference between reported total debt and total principal amount is mainly related to capitalized debt issuance costs.