Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Supplemental Cash Flow Information [Abstract]
Cash payments for interest, net of amounts capitalized	$ (136)	$ (157)
Net cash payments (receipts) for income taxes, net of refunds	10	2
Non-cash proceeds from sale of investment		34
Non-cash Investment segment contributions from non-controlling interests	1,240
Partnership distributions payable	$ (437)	$ (391)