Basis of Presentation (Unaudited) (Details 2) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation	$ 52,200
Innovation Systems Remaining Performance Obligations	8,700
Intercompany backlog eliminated at acquisition	$ 500
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation	We expect to recognize approximately 50 percent and 75 percent of our June 30, 2018 backlog as revenue over the next 12 and 24 months, respectively, with the remainder to be recognized thereafter.