v3.7.0.1
Condensed Consolidated Statement of Income (Unaudited) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Revenue $ 20,463 $ 18,790
Costs and Expenses:    
Programming and production 6,074 5,431
Other operating and administrative 5,827 5,526
Advertising, marketing and promotion 1,530 1,466
Depreciation 1,915 1,785
Amortization 587 493
Total costs and expenses 15,933 14,701
Operating income 4,530 4,089
Other Income (Expense):    
Interest expense (755) (703)
Investment income (loss), net 59 30
Equity in net income (losses) of investees, net 36 (11)
Other income (expense), net 35 130
Other income (expense) items, net (625) (554)
Income before income taxes 3,905 3,535
Income tax expense (1,258) (1,311)
Net income 2,647 2,224
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock (81) (90)
Net income attributable to Parent $ 2,566 $ 2,134
Basic earnings per common share attributable to Comcast Corporation shareholders (in dollars per share) $ 0.54 $ 0.44
Diluted earnings per common share attributable to Comcast Corporation shareholders (in dollars per share) 0.53 0.43
Dividends declared per common share (in dollars per share) $ 0.1575 $ 0.1375
NBCUniversal Media LLC [Member]    
Revenue $ 7,868 $ 6,861
Costs and Expenses:    
Programming and production 3,313 2,965
Other operating and administrative 1,832 1,595
Advertising, marketing and promotion 706 679
Depreciation 231 192
Amortization 277 222
Total costs and expenses 6,359 5,653
Operating income 1,509 1,208
Other Income (Expense):    
Interest expense (143) (147)
Investment income (loss), net 14 6
Equity in net income (losses) of investees, net (26) (2)
Other income (expense), net 11 115
Other income (expense) items, net (144) (28)
Income before income taxes 1,365 1,180
Income tax expense (92) (98)
Net income 1,273 1,082
Net (income) loss attributable to noncontrolling interests (73) (80)
Net income attributable to Parent $ 1,200 $ 1,002