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Other Assets and Intangibles, net - Components of Other Assets and Intangibles (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Intangible Assets Net Excluding Goodwill [Abstract]
Amortization expense	$ 5.4	$ 3.3	$ 11.0	$ 7.1

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- Definition

Amortization of intangible assets excluding above and below market leases.

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

Name:	us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration