Acquisitions - Pro forma Results (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2015
Business Combinations [Abstract]
Pro forma revenues	$ 852,626	$ 1,608,469
Pro forma net income attributable to SNI	$ 155,826	$ 295,361
Pro forma net income attributable to SNI shareholders per share of common stock:
Basic	$ 1.21	$ 2.27
Diluted	$ 1.20	$ 2.26
Weighted average shares outstanding:
Basic	129,225	130,237
Diluted	129,868	130,898

Business acquisition pro forma information earnings per share.

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- Definition

Business acquisition pro forma information weighted average shares.

+ References

No definition available.

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Business acquisition pro forma weighted average shares outstanding basic.

+ References

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Business acquisition pro forma weighted average shares outstanding diluted.

+ References

No definition available.

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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=65885119&loc=d3e1392-128463

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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.

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

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