Other Charges and Credits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Income tax adjustments [Abstract]
AdditionalCurrentTaxExpenseDueToUnfavorableTaxAdjustments	$ 3.7
Additional current tax expense due to tax law change	$ 4.1

Additional current tax expense due to change in tax law.

No definition available.

Name:	sni_Additionalcurrenttaxexpenseduetounfavorabletaxadjustments
Namespace Prefix:	sni_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration