v2.4.0.8
Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash and cash equivalents $ 1,718 $ 10,951 $ 1,620 $ 5,984
Investments [Current] 3,573 1,464    
Receivables, net 6,376 5,521    
Programming rights 928 909    
Other current assets 1,480 1,146    
Total current assets 14,075 19,991    
Film and television costs 4,994 5,054    
Investments 3,770 6,325    
Property and equipment, net 29,840 27,232    
Franchise rights 59,364 59,364    
Goodwill 27,098 26,985 26,874  
Other intangible assets, net 17,329 17,840    
Other noncurrent assets, net 2,343 2,180    
Total assets 158,813 164,971    
Accounts payable and accrued expenses related to trade creditors 5,528 6,206    
Accrued participations and residuals 1,239 1,350    
Accrued expenses and other current liabilities [condensed] 8,865 6,782    
Current portion of long-term debt 3,280 2,376    
Total current liabilities 18,912 16,714    
Long-term debt, less current portion 44,567 38,082    
Deferred income taxes 31,935 30,110    
Other noncurrent liabilities 11,384 13,271    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 957 16,998    
Common stock 30 31    
Other shareholders' equity 50,664 49,325    
Total Parent Company equity 50,694 49,356    
Noncontrolling interests 364 440    
Total equity 51,058 49,796 47,655 44,434
Total liabilities and equity 158,813 164,971    
Comcast [Member]
        
Other current assets 237 233    
Total current assets 237 233    
Investments 11      
Investments in and amounts due from subsidiaries eliminated upon consolidation 79,956 74,227    
Property and equipment, net 220 242    
Other intangible assets, net 11 12    
Other noncurrent assets, net 1,078 1,130    
Total assets 81,513 75,844    
Accounts payable and accrued expenses related to trade creditors 8 8    
Accrued expenses and other current liabilities [condensed] 1,371 1,290    
Current portion of long-term debt 2,351      
Total current liabilities 3,730 1,298    
Long-term debt, less current portion 25,170 23,306    
Deferred income taxes   0    
Other noncurrent liabilities 1,919 1,884    
Common stock 30 31    
Other shareholders' equity 50,664 49,325    
Total Parent Company equity 50,694 49,356    
Total equity 50,694 49,356    
Total liabilities and equity 81,513 75,844    
Comcast Holdings [Member]
        
Investments in and amounts due from subsidiaries eliminated upon consolidation 97,429 87,630    
Other noncurrent assets, net 145 147    
Total assets 97,574 87,777    
Accrued expenses and other current liabilities [condensed] 266 275    
Total current liabilities 266 275    
Long-term debt, less current portion 132 113    
Deferred income taxes 777 754    
Other shareholders' equity 96,399 86,635    
Total Parent Company equity 96,399 86,635    
Total equity 96,399 86,635    
Total liabilities and equity 97,574 87,777    
CCCL Parent [Member]
        
Other current assets   14    
Total current assets   14    
Investments in and amounts due from subsidiaries eliminated upon consolidation 102,673 96,853    
Other noncurrent assets, net   1    
Total assets 102,673 96,868    
Accrued expenses and other current liabilities [condensed] 180 210    
Current portion of long-term debt   2,105    
Total current liabilities 180 2,315    
Long-term debt, less current portion 1,827 1,827    
Other shareholders' equity 100,666 92,726    
Total Parent Company equity 100,666 92,726    
Total equity 100,666 92,726    
Total liabilities and equity 102,673 96,868    
Combined CCHMO Parents [Member]
        
Other current assets   4    
Total current assets   4    
Investments in and amounts due from subsidiaries eliminated upon consolidation 54,724 50,242    
Total assets 54,724 50,246    
Accrued expenses and other current liabilities [condensed] 47 54    
Current portion of long-term debt   241    
Total current liabilities 47 295    
Long-term debt, less current portion 1,505 1,512    
Other shareholders' equity 53,172 48,439    
Total Parent Company equity 53,172 48,439    
Total equity 53,172 48,439    
Total liabilities and equity 54,724 50,246    
NBCUniversal Media Parent [Member]
        
Cash and cash equivalents 336 5,129 238  
Receivables, net   3    
Other current assets 35 51    
Total current assets 371 5,183    
Investments 374 529    
Investments in and amounts due from subsidiaries eliminated upon consolidation 40,644 38,464    
Other noncurrent assets, net 103 152    
Total assets 41,492 44,328    
Accrued expenses and other current liabilities [condensed] 323 263    
Current portion of long-term debt 903 7    
Total current liabilities 1,226 270    
Long-term debt, less current portion 10,236 11,219    
Deferred income taxes 59 78    
Other noncurrent liabilities 931 926    
Other shareholders' equity 29,040 31,835    
Total Parent Company equity 29,040 31,835    
Total equity 29,040 31,835    
Total liabilities and equity 41,492 44,328    
Comcast Non-Guarantor Subsidiaries [Member]
        
Cash and cash equivalents 1,382 5,822 1,382 5,984
Investments [Current] 3,573 1,464    
Receivables, net 6,376 5,518    
Programming rights 928 909    
Other current assets 1,208 844    
Total current assets 13,467 14,557    
Film and television costs 4,994 5,054    
Investments 3,385 5,796    
Investments in and amounts due from subsidiaries eliminated upon consolidation 85,164 73,298    
Property and equipment, net 29,620 26,990    
Franchise rights 59,364 59,364    
Goodwill 27,098 26,985    
Other intangible assets, net 17,318 17,828    
Other noncurrent assets, net 1,899 1,650    
Total assets 242,309 231,522    
Accounts payable and accrued expenses related to trade creditors 5,520 6,198    
Accrued participations and residuals 1,239 1,350    
Accrued expenses and other current liabilities [condensed] 6,678 4,690    
Current portion of long-term debt 26 23    
Total current liabilities 13,463 12,261    
Long-term debt, less current portion 5,697 105    
Deferred income taxes 31,840 30,035    
Other noncurrent liabilities 8,675 10,604    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 957 16,998    
Other shareholders' equity 181,313 161,079    
Total Parent Company equity 181,313 161,079    
Noncontrolling interests 364 440    
Total equity 181,677 161,519    
Total liabilities and equity 242,309 231,522    
Elimination and Consolidation Adjustments [Member]
        
Investments in and amounts due from subsidiaries eliminated upon consolidation (460,590) (420,714)    
Other noncurrent assets, net (882) (900)    
Total assets (461,472) (421,614)    
Deferred income taxes (741) (757)    
Other noncurrent liabilities (141) (143)    
Other shareholders' equity (460,590) (420,714)    
Total Parent Company equity (460,590) (420,714)    
Total equity (460,590) (420,714)    
Total liabilities and equity $ (461,472) $ (421,614)