Performance Obligation (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation	$ 13,120
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation	we expect to recognize approximately 30% of the revenue over the next 12 months and the remainder thereafter
Contract with Customer, Liability, Revenue Recognized	$ 340