Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:
Net Loss	$ 163	$ (102)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	371	393
Non-cash compensation expense attributable to stock awards	26	85
Accretion of debt discount and amortization of debt issuance costs	17	18
Accrued interest on long-term debt, net	6	(17)
Non-cash tax adjustment	(4)	0
Deferred income taxes	14	(7)
Gain on sale of property, plant and equipment and other assets	(1)	(1)
Other, net	0	(2)
Changes in working capital items:
Receivables	(49)	(25)
Other current assets	(30)	(33)
Payables	(18)	(93)
Deferred revenue	(22)	4
Other current liabilities	(29)	3
Net Cash Provided by Operating Activities	444	223
Cash Flows from Investing Activities:
Capital expenditures	(404)	(377)
Decrease in restricted cash and securities, net	2	8
Net Cash Used in Investing Activities	(402)	(383)
Payments for (Proceeds from) Other Investing Activities	0	(14)
Cash Flows from Financing Activities:
Payments on and repurchases of long-term debt, including current portion and refinancing costs	(6)	(199)
Net Cash Provided by (Used in) Financing Activities	(6)	(199)
Effect of Exchange Rates on Cash and Cash Equivalents	(30)	(24)
Net Change in Cash and Cash Equivalents	6	(383)
Cash and Cash Equivalents at Beginning of Period	631	979
Cash and Cash Equivalents at End of Period	637	596
Supplemental Disclosure of Cash Flow Information:
Cash interest paid	277	335
Income taxes paid, net of refunds	$ 24	$ 20