Other Assets and Intangibles - Components of Other Assets, Net (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Other Assets [Abstract]
Amortization expense	$ 5.0	$ 11.9

Amortization of intangible assets excluding above and below market leases.

No definition available.

Name:	sitc_AmortizationOfIntangibleAssetsExcludingAboveAndBelowMarketLeases
Namespace Prefix:	sitc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration