Investments (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value, Equity And Cost Method Investments [Line Items]

Investment Summary

(in millions)	September 30, 2017		December 31, 2016
Fair Value Method:
Snap	$	427	$	—
Other	164		198
	591		198
Equity Method:
Atairos	2,225		1,601
Hulu	255		225
Other	871		550
	3,351		2,376
Cost Method:
AirTouch	1,610		1,599
BuzzFeed	400		400
Other	756		771
	2,766		2,770
Total investments	6,708		5,344
Less: Current investments	13		97
Noncurrent investments	$	6,695	$	5,247

Investment Income (Loss), Net

Investment Income (Loss), Net

	Three Months Ended September 30						Nine Months Ended September 30
(in millions)	2017			2016			2017			2016
Gains (losses) on sales and exchanges of investments, net	$	10		$	24		$	9		$	39
Investment impairment losses	(3		)	(7		)	(9		)	(28		)
Interest and dividend income	36			31			101			91
Other, net	39			32			104			66
Investment income (loss), net	$	82		$	80		$	205		$	168

NBCUniversal Media LLC [Member]

Fair Value, Equity And Cost Method Investments [Line Items]

Investment Summary

(in millions)	September 30, 2017		December 31, 2016
Fair Value Method:
Snap	$	427	$	—
Other	4		6
	431		6
Equity Method:
Hulu	255		225
Other	432		336
	687		561
Cost Method:
BuzzFeed	400		400
Other	299		296
	699		696
Total investments	$	1,817	$	1,263