CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Cash Flows [Abstract]
Cash flows provided by operating activities	$ 125	$ 64
Cash flows from investing activities
Acquisitions of property and equipment, net of change in related payables	(72)	(44)
Return of investment from discontinued operations	0	68
Proceeds from the sale and maturity of investments	5	20
Investments in non-consolidated affiliates	(10)	0
Payments to acquire investments	(6)	(3)
Other	0	(1)
Cash flows provided by/(used in) investing activities	(83)	40
Cash flows from financing activities
Proceeds from long-term debt and revolving credit facilities	0	55
Repayments of long-term debt and revolving credit facilities	(54)	(104)
Repurchase of CIE shares and distribution of sale proceeds	0	(28)
Distributions to noncontrolling interest owners	(12)	(6)
Other	(7)	3
Cash flows used in financing activities	(73)	(80)
Cash flows from discontinued operations
Cash flows from operating activities	0	53
Cash flows from investing activities	0	(6)
Cash flows from financing activities	0	(68)
Net cash from discontinued operations	0	(21)
Change in cash, cash equivalents, and restricted cash classified as held for sale	0	18
Cash, Cash Equivalents, Restricted Cash And Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(31)	21
Cash, cash equivalents, and restricted cash, beginning of period	4,631	1,394
Cash, cash equivalents, and restricted cash, end of period	4,600	1,415
Supplemental Cash Flow Information
Cash paid for interest	75	80
Cash paid for income taxes	0	24
Change in accrued capital expenditures	$ (2)	$ 9