CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Increase (Decrease) in Deferred Income Taxes	$ (1)	$ 3
OPERATING ACTIVITIES:
Net income	5	201
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, Amortization and Accretion, Net	55	54
Amortization of deferred debt financing costs	1	2
Net gain on sale of business and investments	50	210
Stock-based compensation expense	8	9
Other, net	0	(12)
Change in working capital, net of effects of acquisitions and dispositions	16	(39)
Changes in noncurrent assets and liabilities, net	1	1
Net cash provided by operating activities	37	3
INVESTING ACTIVITIES:
Purchase of property, plant and equipment	(52)	(81)
Acquisition of businesses, net of cash acquired	2	(4)
Proceeds from the sale of assets, net of restricted cash	26	111
Property insurance proceeds	0	7
Investment in equity affiliate	3	0
Payment of indemnification claim from sale of asset	0	(7)
Net cash (used in) provided by investing activities	(27)	26
FINANCING ACTIVITIES:
Proceeds from borrowings on revolving credit facility	220	170
Payments on long-term debt	(3)	(1)
Payments on revolving credit facility	(151)	(228)
Payments on equipment financing capital leases	(1)	(1)
Payments on project debt	(10)	(10)
Cash dividends paid to stockholders	(35)	(33)
Financing of insurance premiums, net	(7)	(7)
Other, net	(2)	0
Net cash provided by (used in) financing activities	11	(110)
Effect of exchange rate changes on cash and cash equivalents	0	3
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	21	(78)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	126	116
Cash, cash equivalents and restricted cash at end of period	88	51
Restricted funds held in trust	31	42
Restricted funds held in trust	$ 7	$ 23