Investments (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Fair value method	$ 167	$ 167
Equity method	1,099	678
Cost method	2,506	2,485
Total Investments	3,772	3,330
Less: Current investments	93	106
Noncurrent investments	3,679	3,224
NBCUniversal Media LLC [Member]
Fair value method	7	10
Equity method	502	497
Cost method	470	458
Total Investments	979	965
Atairos [Member]
Equity method	402	0
Hulu [Member]
Equity method	170	184
Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity method	170	184
Other Investment [Member]
Equity method	527	494
Cost method	915	902
Other Investment [Member] \| NBCUniversal Media LLC [Member]
Equity method	332	313
Air Touch [Member]
Cost method	$ 1,591	$ 1,583

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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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Sum of the carrying amounts as of the balance sheet date of all investments.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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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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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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