Contract Asset & Liability (Tables)

12 Months Ended

Dec. 31, 2020

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]

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

Total contract assets and contract liabilities as of December 31, 2020 and 2019 are as follows:

(dollars in millions)	2020		2019
Contract assets	$	9,931	$	4,462
Contract liabilities	(12,889)		(9,014)
Net contract liabilities	$	(2,958)	$	(4,552)

Costs in Excess of Billings and Billings in Excess of Costs

Contract assets consisted of the following at December 31: 

(dollars in millions)	2020		2019
Unbilled	$	20,336	$	5,211
Progress payments	(10,405)		(749)
Total contract assets	$	9,931	$	4,462