Programming and Production Costs (Schedule) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Film Costs:
Released, less amortization	$ 1,551	$ 1,600
Completed, not released	187	144
In production and in development	1,314	1,063
Total film costs	3,052	2,807
Television Costs:
Released, less amortization	2,810	2,289
In production and in development	1,162	953
Total television costs	3,972	3,242
Programming rights, less amortization	5,786	5,534
Total film costs, television costs and programming rights	12,810	11,583
Less: Current portion of programming rights	3,877	3,746
Film and television costs	8,933	7,837
NBCUniversal Media LLC [Member]
Film Costs:
Released, less amortization	1,546	1,600
Completed, not released	187	144
In production and in development	1,314	1,063
Total film costs	3,047	2,807
Television Costs:
Released, less amortization	2,706	2,161
In production and in development	1,162	953
Total television costs	3,868	3,114
Programming rights, less amortization	2,586	2,694
Total film costs, television costs and programming rights	9,501	8,615
Less: Current portion of programming rights	1,545	1,323
Film and television costs	$ 7,956	$ 7,292