Contract Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability [Table Text Block]

Total contract assets and contract liabilities were as follows:

(dollars in millions)	March 31, 2022		December 31, 2021
Contract assets	$	11,566	$	11,361
Contract liabilities	(13,739)		(13,720)
Net contract liabilities	$	(2,173)	$	(2,359)