CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
OPERATING ACTIVITIES:
Net (loss) income	$ (9)	$ 3
Adjustments to reconcile net income (loss) from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization expense	148	157
Amortization of long-term debt deferred financing costs	6	5
Amortization of debt premium and discount	0	(1)
Net write-offs	24	64
Loss on extinguishment of debt	2	2
Non-cash convertible debt related expense	0	13
Stock-based compensation expense	15	15
Equity in net income (loss) from unconsolidated investments	(11)	(5)
Dividends from unconsolidated investments	3	10
Deferred income taxes	(22)	(17)
Other, net	0	3
Change in restricted funds held in trust	14	14
Change in working capital	(16)	1
Total adjustments for continuing operations	163	261
Net cash provided by operating activities from continuing operations	154	264
Net cash provided by operating activities from discontinued operations	0	1
Net cash provided by operating activities	154	265
INVESTING ACTIVITIES:
Proceeds from the sale of investment securities	0	6
Purchase of investment securities	0	(4)
Purchase of property, plant and equipment	(267)	(152)
Change in restricted funds held in trust	(64)	(20)
Acquisition of business, net of cash acquired	70	13
Acquisition of noncontrolling interest in subsidiary	0	12
Other, net	0	(6)
Net cash used in investing activities from continuing operations	(401)	(201)
Net cash provided by investing activities from discontinued operations	0	0
Net cash (used in) provided by investing activities	(401)	(201)
FINANCING ACTIVITIES:
Proceeds from borrowings on long-term debt	294	412
Proceeds from borrowings on revolving credit facility	655	431
Proceeds from equipment financing capital lease	15	47
Proceeds from borrowings on project debt	59	63
Proceeds from borrowings on Dublin Convertible Preferred	85	0
Proceeds from settlement of Note Hedge	0	(83)
Payments related to cash conversion option	0	83
Principal payments on long-term debt	(196)	(557)
Payments of borrowings on revolving credit facility	(509)	(361)
Payment of equipment financing capital lease	(3)	0
Principal payments on project debt	(63)	(33)
Payment of deferred financing costs	(8)	(36)
Cash dividends paid to stockholders	(100)	(69)
Change in restricted funds held in trust	2	(57)
Other, net	0	(7)
Net cash used in financing activities from continuing operations	231	(167)
Net cash (used in) provided by financing activities from discontinued operations	0	(2)
Net cash used in financing activities	231	(169)
Effect of exchange rate changes on cash and cash equivalents	(4)	(3)
Net (decrease) increase in cash and cash equivalents	(20)	(108)
Cash and cash equivalents at beginning of period	91	200
Cash and cash equivalents at end of period	71	92
Less: Cash and cash equivalents of discontinued operations at end of period	2	12
Cash and cash equivalents	$ 69	$ 80