S000008513 [Member] Investment Objectives and Goals - Nuveen California High Yield Municipal Bond Fund	Feb. 28, 2026
Prospectus [Line Items]
Risk/Return [Heading]	Nuveen California High Yield Municipal Bond Fund
Objective [Heading]	Investment Objective
Objective, Primary [Text Block]	The investment objective of the Fund is to provide high current income exempt from regular federal, California state and, in some cases, California local income taxes.
Objective, Secondary [Text Block]	Total return is a secondary objective when consistent with the Fund's primary objective.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 2
-Subsection a

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 2
-Subsection a

Name:	oef_ObjectivePrimaryTextBlock
Namespace Prefix:	oef_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 2
-Subsection a

Name:	oef_ObjectiveSecondaryTextBlock
Namespace Prefix:	oef_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Section 2
-Name Form N-1A
-Subsection a

Name:	dei_LegalEntityAxis=nmst2_S000008513Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: