Investments (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Fair value method	$ 165	$ 167
Equity method	1,077	678
Cost method	2,471	2,485
Total Investments	3,713	3,330
Less: Current investments	75	106
Noncurrent investments	3,638	3,224
NBCUniversal Media LLC [Member]
Fair value method	6	10
Equity method	495	497
Cost method	469	458
Total Investments	970	965
Air Touch [Member]
Cost method	1,587	1,583
Other Investment [Member]
Equity method	529	494
Cost method	884	902
Other Investment [Member] \| NBCUniversal Media LLC [Member]
Equity method	336	313
Hulu [Member]
Equity method	159	184
Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity method	159	184
Atairos [Member]
Equity method	$ 389	$ 0

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.

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