Revenue - Contract assets and liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Contract assets and contract liabilities
Contract Liabilities	$ 223	$ 275
Imagery | EnhancedView contract
Contract assets and contract liabilities
Contract Liabilities	49	78
Increase in contract liability due to imputed interest on advance payments	1
Revenue recognized	30
Earth intelligence
Contract assets and contract liabilities
Contract Liabilities	101	130
Space Infrastructure
Contract assets and contract liabilities
Contract Liabilities	$ 122	$ 145