v3.6.0.2
Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Assets        
Cash and cash equivalents $ 3,301 $ 2,295 $ 3,910 $ 1,718
Receivables, net 7,955 6,896    
Programming rights 1,250 1,213    
Deposits 1,772 21    
Other current assets 2,083 1,878    
Total current assets 16,361 12,303    
Film and television costs 7,252 5,855    
Investments 5,247 3,224    
Investments in and amounts due from subsidiaries eliminated upon consolidation 0 0    
Property and equipment, net 36,253 33,665    
Franchise rights 59,364 59,364    
Goodwill 35,980 32,945 27,316  
Other intangible assets, net 17,274 16,946    
Other noncurrent assets, net 2,769 2,272    
Total assets 180,500 166,574    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 6,915 6,215    
Accrued participations and residuals 1,726 1,572    
Accrued expenses and other current liabilities 7,414 6,764    
Current portion of long-term debt 5,480 3,627    
Total current liabilities 21,535 18,178    
Long-term debt, less current portion 55,566 48,994    
Deferred income taxes 34,854 33,566    
Other noncurrent liabilities 10,925 10,637    
Redeemable noncontrolling interests 1,446 1,221    
Equity:        
Common stock 28 29    
Other shareholders’ equity 53,915 52,240    
Total Comcast Corporation shareholders’ equity 53,943 52,269    
Noncontrolling interests 2,231 1,709    
Total equity 56,174 53,978 53,068 51,058
Total liabilities and equity 180,500 166,574    
Comcast Parent [Member]        
Assets        
Cash and cash equivalents 0 0 0 0
Receivables, net 0 0    
Programming rights 0 0    
Deposits 0 0    
Other current assets 151 69    
Total current assets 151 69    
Film and television costs 0 0    
Investments 75 33    
Investments in and amounts due from subsidiaries eliminated upon consolidation 98,350 87,142    
Property and equipment, net 298 210    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 13 12    
Other noncurrent assets, net 1,138 1,301    
Total assets 100,025 88,767    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 23 16    
Accrued participations and residuals 0 0    
Accrued expenses and other current liabilities 1,726 1,789    
Current portion of long-term debt 3,739 1,149    
Total current liabilities 5,488 2,954    
Long-term debt, less current portion 38,123 31,106    
Deferred income taxes 0 0    
Other noncurrent liabilities 2,471 2,438    
Redeemable noncontrolling interests 0 0    
Equity:        
Common stock 28 29    
Other shareholders’ equity 53,915 52,240    
Total Comcast Corporation shareholders’ equity 53,943 52,269    
Noncontrolling interests 0 0    
Total equity 53,943 52,269    
Total liabilities and equity 100,025 88,767    
Comcast Holdings [Member]        
Assets        
Cash and cash equivalents 0 0 0 0
Receivables, net 0 0    
Programming rights 0 0    
Deposits 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 120,071 111,241    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net 638 147    
Total assets 120,709 111,388    
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 0 335    
Current portion of long-term debt 0 0    
Total current liabilities 0 335    
Long-term debt, less current portion 141 130    
Deferred income taxes 542 624    
Other noncurrent liabilities 0 0    
Redeemable noncontrolling interests 0 0    
Equity:        
Common stock 0 0    
Other shareholders’ equity 120,026 110,299    
Total Comcast Corporation shareholders’ equity 120,026 110,299    
Noncontrolling interests 0 0    
Total equity 120,026 110,299    
Total liabilities and equity 120,709 111,388    
CCCL Parent [Member]        
Assets        
Cash and cash equivalents 0 0 0 0
Receivables, net 0 0    
Programming rights 0 0    
Deposits 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 117,696 119,354    
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 117,696 119,354    
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 341 290    
Current portion of long-term debt 550 0    
Total current liabilities 891 290    
Long-term debt, less current portion 2,100 2,650    
Deferred income taxes 0 0    
Other noncurrent liabilities 0 0    
Redeemable noncontrolling interests 0 0    
Equity:        
Common stock 0 0    
Other shareholders’ equity 114,705 116,414    
Total Comcast Corporation shareholders’ equity 114,705 116,414    
Noncontrolling interests 0 0    
Total equity 114,705 116,414    
Total liabilities and equity 117,696 119,354    
NBCUniversal Media Parent [Member]        
Assets        
Cash and cash equivalents 482 414 385 336
Receivables, net 0 0    
Programming rights 0 0    
Deposits 0 0    
Other current assets 36 17    
Total current assets 518 431    
Film and television costs 0 0    
Investments 651 430    
Investments in and amounts due from subsidiaries eliminated upon consolidation 47,393 42,441    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net 89 78    
Total assets 48,651 43,380    
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 302 389    
Current portion of long-term debt 4 1,005    
Total current liabilities 306 1,394    
Long-term debt, less current portion 8,208 8,211    
Deferred income taxes 70 66    
Other noncurrent liabilities 1,166 1,087    
Redeemable noncontrolling interests 0 0    
Equity:        
Common stock 0 0    
Other shareholders’ equity 38,901 32,622    
Total Comcast Corporation shareholders’ equity 38,901 32,622    
Noncontrolling interests 0 0    
Total equity 38,901 32,622    
Total liabilities and equity 48,651 43,380    
Comcast Non-Guarantor Subsidiaries [Member]        
Assets        
Cash and cash equivalents 2,819 1,881 3,525 1,382
Receivables, net 7,955 6,896    
Programming rights 1,250 1,213    
Deposits 1,772 21    
Other current assets 1,896 1,792    
Total current assets 15,692 11,803    
Film and television costs 7,252 5,855    
Investments 4,521 2,761    
Investments in and amounts due from subsidiaries eliminated upon consolidation 97,704 109,598    
Property and equipment, net 35,955 33,455    
Franchise rights 59,364 59,364    
Goodwill 35,980 32,945    
Other intangible assets, net 17,261 16,934    
Other noncurrent assets, net 1,921 2,114    
Total assets 275,650 274,829    
Liabilities and Equity        
Accounts payable and accrued expenses related to trade creditors 6,892 6,199    
Accrued participations and residuals 1,726 1,572    
Accrued expenses and other current liabilities 5,045 3,961    
Current portion of long-term debt 1,187 1,473    
Total current liabilities 14,850 13,205    
Long-term debt, less current portion 6,994 6,897    
Deferred income taxes 35,259 34,098    
Other noncurrent liabilities 7,288 7,258    
Redeemable noncontrolling interests 1,446 1,221    
Equity:        
Common stock 0 0    
Other shareholders’ equity 207,582 210,441    
Total Comcast Corporation shareholders’ equity 207,582 210,441    
Noncontrolling interests 2,231 1,709    
Total equity 209,813 212,150    
Total liabilities and equity 275,650 274,829    
Elimination and Consolidation Adjustments [Member]        
Assets        
Cash and cash equivalents 0 0 $ 0 $ 0
Receivables, net 0 0    
Programming rights 0 0    
Deposits 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 (481,214) (469,776)    
Property and equipment, net 0 0    
Franchise rights 0 0    
Goodwill 0 0    
Other intangible assets, net 0 0    
Other noncurrent assets, net (1,017) (1,368)    
Total assets (482,231) (471,144)    
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 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 (1,017) (1,222)    
Other noncurrent liabilities 0 (146)    
Redeemable noncontrolling interests 0 0    
Equity:        
Common stock 0 0    
Other shareholders’ equity (481,214) (469,776)    
Total Comcast Corporation shareholders’ equity (481,214) (469,776)    
Noncontrolling interests 0 0    
Total equity (481,214) (469,776)    
Total liabilities and equity $ (482,231) $ (471,144)