Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities:
Net Income	$ 109	$ 163
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	576	371
Non-cash compensation expense attributable to stock awards	58	26
Loss on modification and extinguishment of debt	163	0
Accretion of debt discount and amortization of debt issuance costs	13	17
Accrued interest on long-term debt, net	(40)	6
Non-cash tax adjustments	0	(4)
Deferred income taxes	(10)	14
Loss (gain) on sale of property, plant and equipment and other assets	1	(1)
Other, net	30	0
Changes in working capital items:
Receivables	(32)	(49)
Other current assets	(36)	(30)
Accounts payable	(22)	(18)
Deferred revenue	(4)	(22)
Other current liabilities	(82)	(29)
Net Cash Provided by Operating Activities	724	444
Cash Flows from Investing Activities:
Capital expenditures	(571)	(404)
(Increase) decrease in restricted cash and securities, net	(24)	2
Proceeds from sale of property, plant and equipment and other assets	2	0
Net Cash Used in Investing Activities	(593)	(402)
Cash Flows from Financing Activities:
Long-term debt borrowings, net of issuance costs	3,948	0
Payments on and repurchases of long-term debt, including current portion and refinancing costs	(4,098)	(6)
Net Cash Used in Financing Activities	(150)	(6)
Effect of Exchange Rates on Cash and Cash Equivalents	(12)	(30)
Net Change in Cash and Cash Equivalents	(31)	6
Cash and Cash Equivalents at Beginning of Period	580	631
Cash and Cash Equivalents at End of Period	549	637
Supplemental Disclosure of Cash Flow Information:
Cash interest paid	366	277
Income taxes paid, net of refunds	29	24
Non-cash Financing Activities:
Capital Lease Obligations Incurred	6	0
Long-term debt conversion into equity	333	0
Accrued interest conversion into equity	$ 10	$ 0