Revenue Recognition (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) segments	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Remaining performance obligation, amount | $	$ 709
Number of operating segments (in segments) | segments	2
Minimum
Disaggregation of Revenue [Line Items]
Percentage of completion revenue	4.00%
Maximum
Disaggregation of Revenue [Line Items]
Percentage of completion revenue	10.00%
Transferred over Time
Disaggregation of Revenue [Line Items]
Revenue from products and services percentage	19.00%	22.00%	4.00%
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue from products and services percentage	81.00%	78.00%	96.00%