Condensed Combined Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Activities:
Net income	$ 149	$ 2,350
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	70	70
Gain on sales of assets, net	(89)
Equity in earnings from investments in affiliates	(4)	(4)
Gain on foreign currency transactions	(1)	(1)
Share-based compensation expense	4
Amortization of deferred financing costs	1	1
Distributions from unconsolidated affiliates	1	4
Deferred income taxes	(5)	(2,288)
Changes in operating assets and liabilities	(83)	9
Net cash provided by operating activities	43	141
Investing Activities:
Capital expenditures for property and equipment	(53)	(37)
Proceeds from asset dispositions, net	360
Insurance proceeds for property damage claims	18
Investments in affiliates		(1)
Distributions from unconsolidated affiliates		1
Net cash provided by (used in) investing activities	325	(37)
Financing Activities:
Dividends paid	(119)	(110)
Tax withholdings on share-based compensation	(1)
Repurchase of common stock	(348)
Net transfers to Parent		(9)
Net cash used in financing activities	(468)	(119)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	1	1
Net decrease in cash and cash equivalents and restricted cash	(99)	(14)
Cash and cash equivalents and restricted cash, beginning of period	379	350
Cash and cash equivalents and restricted cash, end of period	280	336
Non-cash financing activities:
Dividends paid in stock		441
Dividends declared but unpaid	$ 86	$ 92