Investments (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair value method	$ 167	$ 662
Equity method	678	1,019
Cost method	2,485	2,056
Total Investments	3,330	3,737
Less: Current investments	106	602
Noncurrent investments	3,224	3,135
NBCUniversal Media LLC [Member]
Fair value method	10	10
Equity method	497	840
Cost method	458	32
Total Investments	965	882
Other Equity Method Investments [Member]
Equity method	494	517
Other Equity Method Investments [Member] \| NBCUniversal Media LLC [Member]
Equity method	313	338
Air Touch [Member]
Cost method	1,583	1,568
Other Investment [Member]
Cost method	902	488
The Weather Channel [Member]
Equity method	0	335
The Weather Channel [Member] \| NBCUniversal Media LLC [Member]
Equity method	0	335
Hulu [Member]
Equity method	184	167
Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity method	$ 184	$ 167

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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