v2.4.0.8
Condensed Consolidating Financial Information (Details 2) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Assets            
Cash and cash equivalents $ 3,357 $ 3,689 $ 5,134 $ 3,964 $ 3,982 $ 4,017
Other current assets 3,509   3,513      
Total current assets 6,866   8,647      
Property and equipment, net 21,056   20,880      
Goodwill 2,987   2,987      
Other assets 1,306   1,741      
Total assets 32,215   34,255      
Liabilities and equity            
Debt due within one year 191   1,367      
Other current liabilities 3,604   4,096      
Total current liabilities 3,795   5,463      
Long-term debt 10,608   11,092      
Other long-term liabilities 2,148   1,970      
Total long-term liabilities 12,756   13,062      
Commitments and contingencies              
Total equity 15,664   15,730 15,609   15,627
Total liabilities and equity 32,215   34,255      
Parent Guarantor
            
Assets            
Cash and cash equivalents 1   24 19   3
Other current assets 8   7      
Total current assets 9   31      
Investment in affiliates 17,142   16,354      
Total assets 17,151   16,385      
Liabilities and equity            
Other current liabilities 629   13      
Total current liabilities 629   13      
Long-term debt 801   594      
Other long-term liabilities 39   33      
Total long-term liabilities 840   627      
Total equity 15,682   15,745      
Total liabilities and equity 17,151   16,385      
Subsidiary Issuer
            
Assets            
Cash and cash equivalents 1,692   3,155 2,206   2,793
Other current assets 2,298   1,901      
Total current assets 3,990   5,056      
Investment in affiliates 28,684   27,933      
Other assets 1,993   1,804      
Total assets 34,667   34,793      
Liabilities and equity            
Debt due within one year     564      
Other current liabilities 473   632      
Total current liabilities 473   1,196      
Long-term debt 17,734   17,772      
Other long-term liabilities 365   454      
Total long-term liabilities 18,099   18,226      
Total equity 16,095   15,371      
Total liabilities and equity 34,667   34,793      
Other Subsidiaries
            
Assets            
Cash and cash equivalents 1,664   1,955 1,739   1,221
Other current assets 3,514   3,852      
Total current assets 5,178   5,807      
Property and equipment, net 21,056   20,880      
Goodwill 2,987   2,987      
Other assets 18,586   18,244      
Total assets 47,807   47,918      
Liabilities and equity            
Debt due within one year 191   803      
Other current liabilities 4,813   5,698      
Total current liabilities 5,004   6,501      
Long-term debt 11,346   11,033      
Other long-term liabilities 1,744   1,483      
Total long-term liabilities 13,090   12,516      
Total equity 29,713   28,901      
Total liabilities and equity 47,807   47,918      
Consolidating adjustments
            
Assets            
Other current assets (2,311)   (2,247)      
Total current assets (2,311)   (2,247)      
Investment in affiliates (45,826)   (44,287)      
Other assets (19,273)   (18,307)      
Total assets (67,410)   (64,841)      
Liabilities and equity            
Other current liabilities (2,311)   (2,247)      
Total current liabilities (2,311)   (2,247)      
Long-term debt (19,273)   (18,307)      
Total long-term liabilities (19,273)   (18,307)      
Total equity (45,826)   (44,287)      
Total liabilities and equity $ (67,410)   $ (64,841)