Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Revenues by Segment

Revenues

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018			2017		2018			2017
U.S. Networks	$	1,674		$	823	$	4,628		$	2,542
International Networks	916			796		3,065			2,354
Education and Other	3			32		52			113
Corporate and inter-segment eliminations	(1		)	—		(1		)	—
Total revenues	$	2,592		$	1,651	$	7,744		$	5,009

Schedule of Adjusted OIBDA by Segment

Adjusted OIBDA

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
U.S. Networks	$	901		$	480		$	2,536		$	1,548
International Networks	254			180			727			610
Education and Other	—			—			3			(1		)
Corporate and inter-segment eliminations	(111		)	(85		)	(311		)	(262		)
Total Adjusted OIBDA	$	1,044		$	575		$	2,955		$	1,895

Schedule of Reconciliation of Net Income available to Discovery, Inc. to total Adjusted OIBDA

Reconciliation of Net Income available to Discovery, Inc. to total Adjusted OIBDA

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Net income available to Discovery, Inc.	$	117		$	218		$	325		$	807
Net income attributable to redeemable noncontrolling interests	5			5			16			17
Net income attributable to noncontrolling interests	13			—			41			—
Income tax expense (benefit)	43			(59		)	146			89
Income before income taxes	178			164			528			913
Other expense, net	15			106			84			143
(Income) loss from equity investees, net	(9		)	27			53			122
Loss on extinguishment of debt	—			—			—			54
Interest expense	185			136			558			318
Operating income	369			433			1,223			1,550
(Gain) loss on disposition	—			—			(84		)	4
Restructuring and other charges	224			11			652			43
Depreciation and amortization	398			80			1,001			240
Mark-to-market share-based compensation	27			(11		)	56			(4		)
Scripps Networks transaction and integration costs	26			62			107			62
Total Adjusted OIBDA	$	1,044		$	575		$	2,955		$	1,895

Schedule of Total Assets by Segment

Total Assets

	September 30, 2018		December 31, 2017
U.S. Networks	$	19,046	$	4,127
International Networks	7,212		5,187
Education and Other	267		394
Corporate and inter-segment eliminations	6,387		12,847
Total assets	$	32,912	$	22,555