CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Cash Flows [Abstract]
Cash flows provided by operating activities	$ 283	$ 454
Cash flows from investing activities
Acquisitions of property and equipment, net of change in related payables	(245)	(147)
Deconsolidation of CRBH	(57)	0
Return of investment from discontinued operations	0	132
Contributions to discontinued operations	0	(144)
Proceeds from the sale and maturity of investments	28	38
Payments to acquire investments	(21)	(15)
Other	0	(3)
Cash flows used in investing activities	(295)	(139)
Cash flows from financing activities
Proceeds from long-term debt and revolving credit facilities	585	80
Debt issuance costs and fees	19	0
Repayments of long-term debt and revolving credit facilities	(673)	(255)
Repurchase of CIE shares	0	(609)
Distribution of CIE sale proceeds	(63)	(487)
Distributions to noncontrolling interest owners	(30)	(21)
Other	(5)	7
Cash flows used in financing activities	(205)	(1,285)
Cash flows from discontinued operations
Cash flows from operating activities	0	157
Cash flows from investing activities	0	4,384
Cash flows from financing activities	0	12
Net cash from discontinued operations	0	4,553
Change in cash, cash equivalents, and restricted cash classified as held for sale	0	111
Net increase/(decrease) in cash, cash equivalents, and restricted cash	(217)	3,694
Cash, cash equivalents, and restricted cash, beginning of period	4,631	1,394
Cash, cash equivalents, and restricted cash, end of period	4,414	5,088
Supplemental Cash Flow Information:
Cash paid for interest	319	363
Cash paid for income taxes	0	65
Change in accrued capital expenditures	$ 2	$ 1