CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
OPERATING ACTIVITIES:
Net income	$ 10	$ 152	$ 57
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation, Amortization and Accretion, Net	221	218	215
Amortization of long-term debt deferred financing costs	5	5	7
(Loss) gain on asset sales	(49)	(217)	6
Impairment charges	2	86	2
Loss on extinguishment of debt	0	15	84
Provision for doubtful accounts	2	2	9
Stock-based compensation expense	25	24	18
Equity in net income from unconsolidated investments	6	6	1
Increase (Decrease) in Deferred Income Taxes	(9)	(31)	(193)
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, 50 Percent or Less Owned Persons	9	13	2
Other, net	3	(10)	(13)
Change in operating assets and liabilities, net of effects of acquisitions:
Receivables	94	7	(27)
Increase (Decrease) in Prepaid Expense and Other Assets	(5)	(3)	5
Accounts payable and accrued expenses	(77)	(16)	66
Net cash provided by operating activities	226	238	242
INVESTING ACTIVITIES:
Payments to Acquire Productive Assets	158	206	277
Acquisition of businesses, net of cash acquired	2	(50)	(16)
Proceeds from Sale of Other Assets, Investing Activities	27	128	4
Proceeds from Insurance Settlement, Investing Activities	0	18	8
Loss Contingency Accrual, Payments	0	(7)	0
Investment in equity affiliate	(14)	(16)	0
Other, net	(2)	(6)	(8)
Net cash used in investing activities	(145)	(139)	(289)
FINANCING ACTIVITIES:
Proceeds from borrowings on long-term debt	80	1,165	400
Proceeds from borrowings on revolving credit facility	(536)	(740)	(952)
Proceeds from Insurance Premiums Collected	29	25	24
Proceeds from borrowings on Dublin project financing	0	0	643
Proceeds from settlement of Note Hedge	0	0	(17)
Payments related to cash conversion option	0	0	(132)
Principal payments on long-term debt	(16)	(944)	(420)
Payments of borrowings on revolving credit facility	(565)	(973)	(850)
Principal payments on project debt	(18)	(23)	(382)
Payments of deferred financing costs	(1)	(16)	(21)
Cash dividends paid to stockholders	(133)	(134)	(131)
Payments For Insurance Premium	26	24	4
Other, net	(8)	(5)	(3)
Net cash used in financing activities	(122)	(189)	40
Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net	1	(1)	5
Effect of exchange rate changes on cash and cash equivalents	(1)	1	7
Net decrease in cash, cash equivalents and restricted cash	(42)	(89)	0
Less: Cash and cash equivalents of assets held for sale and discontinued operations at end of period	0	0	77
Cash and cash equivalents	37	58	46
Restricted funds held in trust	18	39	43
Restricted funds held in trust	8	8	28
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	63	105	117
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	63	105	194
Cash Paid for Interest and Income Taxes:
Interest Paid, Excluding Capitalized Interest, Operating Activities	152	136	149
Cash Paid of Income taxes, net of refunds	5	2	0
DublinFinancing [Member]
FINANCING ACTIVITIES:
Payments of deferred financing costs	$ 0	$ 0	$ (19)