Significant Transactions (Tables)

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Pro forma results

(in thousands)	Year ended December 31,
Pro Forma Results (unaudited)	2015
Pro Forma Revenues	$	3,236,344
Pro forma net income attributable to SNI	$	584,618
Pro forma net income attributable to SNI Class A Common and Common Voting shareholders per share of common stock:
Basic	$	4.51
Diluted	$	4.49
Weighted average shares outstanding:
Basic		129,665
Diluted		130,255

Summary of Wholly-owned Investment

We recognized the following from this wholly-owned investment:

	Year ended December 31,
(in thousands)	2017			2016			2015
Operating revenues	$	8,483		$	13,966		$	5,463
Loss from operations before income taxes	$	(2,039	)	$	(4,313	)	$	(2,755	)