Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities:
Net Loss	$ (123)	$ (366)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	596	563
Non-cash compensation expense attributable to stock awards	115	102
Loss on modification and extinguishment of debt, net	17	110
Loss on interest rate swaps	0	60
Accretion of debt discount and amortization of debt issuance costs	27	33
Accrued interest on long-term debt, net	(39)	(47)
Deferred income taxes	0	18
Gain on sale of property, plant and equipment and other assets	(1)	0
Other, net	(34)	(16)
Changes in working capital items:
Receivables	(34)	(120)
Other current assets	(34)	(28)
Payables	(152)	(42)
Deferred revenue	(18)	(45)
Other current liabilities	7	(44)
Net Cash Provided by Operating Activities	327	178
Cash Flows from Investing Activities:
Capital expenditures	(571)	(545)
Decrease in restricted cash and securities, net	13	15
Proceeds from the sale of property, plant and equipment and other assets	16	5
Other	(14)	(13)
Net Cash Used in Investing Activities	(556)	(538)
Cash Flows from Financing Activities:
Long-term debt borrowings, net of issuance costs	590	3,317
Payments on and repurchases of long-term debt, including current portion and refinancing costs	(810)	(3,088)
Proceeds from stock options exercised	0	5
Net Cash Provided by (Used in) Financing Activities	(220)	234
Effect of Exchange Rates on Cash and Cash Equivalents	(23)	1
Net Change in Cash and Cash Equivalents	(472)	(125)
Cash and Cash Equivalents at Beginning of Period	979	918
Cash and Cash Equivalents at End of Period	507	793
Supplemental Disclosure of Cash Flow Information:
Cash interest paid	513	572
Income taxes paid, net of refunds	24	25
Non-cash Financing Activities:
Capital lease obligations incurred	13	0
Note issued for property	12	0
Long-term debt conversion into equity	0	100
Premium on long-term debt conversion into equity	0	39
Accrued interest conversion into equity	$ 0	$ 2