Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets:
Cash and cash equivalents	$ 596	$ 979
Restricted cash and securities	7	8
Receivables, less allowances for doubtful accounts of $32 and $31, respectively	721	714
Other	179	141
Total Current Assets	1,503	1,842
Property, Plant and Equipment, net of accumulated depreciation of $8,671 and $8,359, respectively	8,171	8,199
Restricted Cash and Securities	27	35
Goodwill	2,565	2,565
Other Intangibles, net	232	268
Other Assets, net	367	398
Total Assets	12,865	13,307
Liabilities and Stockholders' Equity:
Accounts payable	688	779
Current portion of long-term debt	30	216
Accrued payroll and employee benefits	177	211
Accrued interest	192	209
Current portion of deferred revenue	226	251
Other	190	136
Total Current Liabilities	1,503	1,802
Long-Term Debt, less current portion	8,506	8,516
Deferred Revenue, less current portion	906	887
Other Liabilities	842	931
Total Liabilities	11,757	12,136
Commitments and Contingencies	0	0
Stockholders’ Equity:
Preferred stock, $.01 par value, authorized 10,000,000 shares: no shares issued or outstanding	0	0
Common stock, $.01 par value, authorized 343,333,333 shares in both periods; 221,915,741 issued and outstanding at June 30, 2013 and 218,380,070 issued and outstanding at December 31, 2012	2	2
Additional paid-in capital	14,102	14,000
Accumulated other comprehensive income (loss)	(37)	26
Accumulated deficit	(12,959)	(12,857)
Total Stockholders’ Equity	1,108	1,171
Total Liabilities and Stockholders’ Equity	$ 12,865	$ 13,307