v3.3.1.900
Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Assets        
Cash and cash equivalents $ 2,295 $ 3,910 $ 1,718 $ 10,951
Investments [Current] 106 602    
Receivables, net 6,896 6,321    
Programming rights 1,213 839    
Other current assets 1,793 1,859    
Total current assets 12,303 13,531    
Film and television costs 5,855 5,727    
Investments 3,224 3,135    
Property and equipment, net 33,665 30,953    
Franchise rights 59,364 59,364    
Goodwill 32,945 27,316 27,098  
Other intangible assets, net 16,946 16,980    
Other noncurrent assets, net 2,272 2,180    
Total assets 166,574 159,186    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 6,215 5,638    
Accrued participations and residuals 1,572 1,347    
Accrued expenses and other current liabilities [condensed] 6,764 6,208    
Current portion of long-term debt 3,627 4,217    
Total current liabilities 18,178 17,410    
Long-term debt, less current portion 48,994 43,864    
Deferred income taxes 33,566 32,959    
Other noncurrent liabilities 10,637 10,819    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 1,221 1,066    
Equity:        
Common stock 29 30    
Other shareholders' equity 52,240 52,681    
Total Comcast Corporation shareholders' equity 52,269 52,711    
Noncontrolling interests 1,709 357    
Total equity 53,978 53,068 51,058 49,796
Total liabilities and equity 166,574 159,186    
Comcast Parent [Member]        
Assets        
Cash and cash equivalents 0 0 0 0
Investments [Current] 0 0    
Receivables, net 0 0    
Programming rights 0 0    
Other current assets 69 267    
Total current assets 69 267    
Film and television costs 0 0    
Investments 33 36    
Investments in and amounts due from subsidiaries eliminated upon consolidation 87,142 84,142    
Property and equipment, net 210 199    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 12 11    
Other noncurrent assets, net 1,301 1,086    
Total assets 88,767 85,741    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 16 19    
Accrued participations and residuals 0 0    
Accrued expenses and other current liabilities [condensed] 1,789 1,547    
Current portion of long-term debt 1,149 1,650    
Total current liabilities 2,954 3,216    
Long-term debt, less current portion 31,106 27,478    
Deferred income taxes 0 0    
Other noncurrent liabilities 2,438 2,336    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 0 0    
Equity:        
Common stock 29 30    
Other shareholders' equity 52,240 52,681    
Total Comcast Corporation shareholders' equity 52,269 52,711    
Noncontrolling interests 0 0    
Total equity 52,269 52,711    
Total liabilities and equity 88,767 85,741    
Comcast Holdings [Member]        
Assets        
Cash and cash equivalents 0 0 0 0
Investments [Current] 0 0    
Receivables, net 0 0    
Programming rights 0 0    
Other current assets 0 0    
Total current assets 0 0    
Film and television costs 0 0    
Investments 0 0    
Investments in and amounts due from subsidiaries eliminated upon consolidation 111,241 103,420    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net 147 145    
Total assets 111,388 103,565    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 0 0    
Accrued participations and residuals 0 0    
Accrued expenses and other current liabilities [condensed] 335 283    
Current portion of long-term debt 0 0    
Total current liabilities 335 283    
Long-term debt, less current portion 130 123    
Deferred income taxes 624 701    
Other noncurrent liabilities 0 0    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 0 0    
Equity:        
Common stock 0 0    
Other shareholders' equity 110,299 102,458    
Total Comcast Corporation shareholders' equity 110,299 102,458    
Noncontrolling interests 0 0    
Total equity 110,299 102,458    
Total liabilities and equity 111,388 103,565    
CCCL Parent [Member]        
Assets        
Cash and cash equivalents 0 0 0 0
Investments [Current] 0 0    
Receivables, net 0 0    
Programming rights 0 0    
Other current assets 0 0    
Total current assets 0 0    
Film and television costs 0 0    
Investments 0 0    
Investments in and amounts due from subsidiaries eliminated upon consolidation 119,354 111,870    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net 0 0    
Total assets 119,354 111,870    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 0 1    
Accrued participations and residuals 0 0    
Accrued expenses and other current liabilities [condensed] 290 280    
Current portion of long-term debt 0 677    
Total current liabilities 290 958    
Long-term debt, less current portion 2,650 2,649    
Deferred income taxes 0 0    
Other noncurrent liabilities 0 0    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 0 0    
Equity:        
Common stock 0 0    
Other shareholders' equity 116,414 108,263    
Total Comcast Corporation shareholders' equity 116,414 108,263    
Noncontrolling interests 0 0    
Total equity 116,414 108,263    
Total liabilities and equity 119,354 111,870    
NBCUniversal Media Parent [Member]        
Assets        
Cash and cash equivalents 414 385 336 5,129
Investments [Current] 0 0    
Receivables, net 0 0    
Programming rights 0 0    
Other current assets 17 41    
Total current assets 431 426    
Film and television costs 0 0    
Investments 430 378    
Investments in and amounts due from subsidiaries eliminated upon consolidation 42,441 41,239    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net 78 80    
Total assets 43,380 42,123    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 0 0    
Accrued participations and residuals 0 0    
Accrued expenses and other current liabilities [condensed] 389 331    
Current portion of long-term debt 1,005 1,006    
Total current liabilities 1,394 1,337    
Long-term debt, less current portion 8,211 9,206    
Deferred income taxes 66 67    
Other noncurrent liabilities 1,087 1,143    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 0 0    
Equity:        
Common stock 0 0    
Other shareholders' equity 32,622 30,370    
Total Comcast Corporation shareholders' equity 32,622 30,370    
Noncontrolling interests 0 0    
Total equity 32,622 30,370    
Total liabilities and equity 43,380 42,123    
Comcast Non-Guarantor Subsidiaries [Member]        
Assets        
Cash and cash equivalents 1,881 3,525 1,382 5,822
Investments [Current] 106 602    
Receivables, net 6,896 6,321    
Programming rights 1,213 839    
Other current assets 1,707 1,551    
Total current assets 11,803 12,838    
Film and television costs 5,855 5,727    
Investments 2,761 2,721    
Investments in and amounts due from subsidiaries eliminated upon consolidation 109,598 98,152    
Property and equipment, net 33,455 30,754    
Franchise rights 59,364 59,364    
Goodwill 32,945 27,316    
Other intangible assets, net 16,934 16,969    
Other noncurrent assets, net 2,114 1,949    
Total assets 274,829 255,790    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 6,199 5,618    
Accrued participations and residuals 1,572 1,347    
Accrued expenses and other current liabilities [condensed] 3,961 3,767    
Current portion of long-term debt 1,473 884    
Total current liabilities 13,205 11,616    
Long-term debt, less current portion 6,897 4,408    
Deferred income taxes 34,098 33,127    
Other noncurrent liabilities 7,258 7,484    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 1,221 1,066    
Equity:        
Common stock 0 0    
Other shareholders' equity 210,441 197,732    
Total Comcast Corporation shareholders' equity 210,441 197,732    
Noncontrolling interests 1,709 357    
Total equity 212,150 198,089    
Total liabilities and equity 274,829 255,790    
Elimination and Consolidation Adjustments [Member]        
Assets        
Cash and cash equivalents 0 0 $ 0 $ 0
Investments [Current] 0 0    
Receivables, net 0 0    
Programming rights 0 0    
Other current assets 0 0    
Total current assets 0 0    
Film and television costs 0 0    
Investments 0 0    
Investments in and amounts due from subsidiaries eliminated upon consolidation (469,776) (438,823)    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net (1,368) (1,080)    
Total assets (471,144) (439,903)    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 0 0    
Accrued participations and residuals 0 0    
Accrued expenses and other current liabilities [condensed] 0 0    
Current portion of long-term debt 0 0    
Total current liabilities 0 0    
Long-term debt, less current portion 0 0    
Deferred income taxes (1,222) (936)    
Other noncurrent liabilities (146) (144)    
Redeemable noncontrolling interests and redeemable subsidiary preferred stock 0 0    
Equity:        
Common stock 0 0    
Other shareholders' equity (469,776) (438,823)    
Total Comcast Corporation shareholders' equity (469,776) (438,823)    
Noncontrolling interests 0 0    
Total equity (469,776) (438,823)    
Total liabilities and equity $ (471,144) $ (439,903)