CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
OPERATING ACTIVITIES:
Net income	$ 116	$ 227	$ 71
Less: (Loss) income from discontinued operations, net of tax expense	(2)	143	36
Income from continuing operations	118	84	35
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization expense	195	193	190
Amortization of long-term debt deferred financing costs	8	6	7
Amortization of debt premium and discount	(3)	(5)	(8)
Net (gains) write-offs	(46)	5	34
Pension settlement expense	11	0	0
Loss on extinguishment of debt	3	1	15
Non-cash convertible debt related expense	25	25	39
Provision for doubtful accounts	2	2	3
Stock-based compensation expense	17	18	17
Equity in net income from unconsolidated investments	(10)	(5)	(2)
Dividends from unconsolidated investments	8	8	5
Deferred income taxes	15	30	20
Change in restricted funds held in trust	34	4	11
Reversal of uncertain tax positions related to pre-emergence tax matters	0	(24)	0
Contractual liability to pre-petition creditors	0	15	0
Change in restricted funds-other related to contractual liability to pre-petition creditors	0	5	0
Other, net	(8)	(7)	5
Receivables	3	13	27
Debt services billings in excess of revenue recognized	21	23	24
Accounts payable and accrued expenses	5	(4)	(19)
Deferred revenue	(42)	(22)	7
Other, net	(14)	(5)	(18)
Total adjustments for continuing operations	224	276	357
Net cash provided by operating activities from continuing operations	342	360	392
Net cash used in operating activities from discontinued operations	0	1	39
Net cash provided by operating activities	342	361	431
INVESTING ACTIVITIES:
Acquisition of businesses, net of cash acquired	(94)	(10)	(130)
Proceeds from the sale of investment securities	5	12	14
Purchase of investment securities	(12)	(15)	(17)
Acquisition of noncontrolling interests in subsidiaries	0	0	(2)
Proceeds from the sale of assets	0	12	12
Purchase of property, plant and equipment	(126)	(118)	(115)
Acquisition of land use rights	(1)	(8)	(19)
Property insurance proceeds	8	1	0
Other, net	(4)	(10)	(18)
Net cash used in investing activities from continuing operations	(224)	(136)	(275)
Net cash provided by investing activities from discontinued operations	11	243	0
Net cash (used in) provided by investing activities	(213)	107	(275)
FINANCING ACTIVITIES:
Proceeds from borrowings on long-term debt	1,034	0	400
Payment of deferred financing costs	(33)	0	(10)
Principal payments on long-term debt	(622)	(7)	(7)
Principal payments on project debt	(424)	(137)	(202)
Convertible debenture repurchases	(25)	(32)	(313)
Payments and fees related to tender offer	0	0	(2)
Payments of borrowings on revolving credit facility	(191)	0	(79)
Proceeds from borrowings on revolving credit facility	251	0	79
Proceeds from borrowings on project debt	0	15	39
Change in restricted funds held in trust	65	38	3
Cash dividends paid to stockholders	(90)	(32)	(233)
Common stock repurchased	(88)	(229)	(95)
Financing of insurance premiums, net	(10)	10	(10)
Distributions to partners of noncontrolling interests in subsidiaries	(1)	(6)	(6)
Proceeds from the exercise of options for common stock, net	2	0	1
Payments to pre-petition creditors	0	(12)	0
Decrease in restricted funds for pre-petition creditors	0	12	0
Other, net	17	(1)	26
Net cash used in financing activities from continuing operations	(115)	(381)	(409)
Net cash (used in) provided by financing activities from discontinued operations	(2)	8	(40)
Net cash used in financing activities	(117)	(373)	(449)
Effect of exchange rate changes on cash and cash equivalents	0	(1)	(1)
Net (decrease) increase in cash and cash equivalents	12	94	(294)
Cash and cash equivalents at beginning of period	234	140	434
Cash and cash equivalents at end of period	246	234	140
Less: Cash and cash equivalents of discontinued operations at end of period	0	2	14
Cash and cash equivalents of continuing operations at end of period	246	232	126
Cash Paid for Interest and Income Taxes:
Cash Paid for Interest	112	101	84
Cash Paid of Income taxes, net of refunds	$ 8	$ 13	$ 4