Acquisitions - Pro forma Results (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Business Combinations [Abstract]
Pro Forma Revenues	$ 3,236,344	$ 3,166,652
Pro forma net income attributable to SNI	$ 584,618	$ 499,767
Pro forma net income attributable to SNI per basic share of common stock	$ 4.51	$ 3.54
Pro forma net income attributable to SNI per diluted share of common stock	$ 4.49	$ 3.51
Weighted average basic shares outstanding	129,665	141,297
Weighted average diluted shares outstanding	130,255	142,193

Business acquisition pro forma weighted average shares outstanding basic.

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- Definition

Business acquisition pro forma weighted average shares outstanding diluted.

+ References

No definition available.

+ Details

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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- References

No definition available.

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