This annual shareholder report contains important information about the Class I Shares of the Nuveen Minnesota Intermediate Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en-us/mutual-funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class I Shares	$62	0.60%

Annualized for period less than one year.

Expenses Paid, Amount

$ 62

Expense Ratio, Percent

0.60%

^[1]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Minnesota Intermediate Municipal Bond Fund returned 5.81% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund performed in line with the S&P Municipal Bond Intermediate Index, which returned 5.92%.

Top contributors to relative performance

•

Sector positioning, especially an overweight to nursing-home bonds and an underweight to industrial development revenue bonds.

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer.

Top detractors from relative performance

•

An overweight to bonds with durations shorter than two years.

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class I Shares at NAV		5.81	%		1.21	%		2.02	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Intermediate Index		5.92	%		1.23	%		2.25	%

Lipper Other States Intermediate Municipal Debt Funds Classification Average		5.12	%		0.52	%		1.40	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 403,405,271

Holdings Count | Holding

306

Advisory Fees Paid, Amount

$ 1,809,802

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	403,405,271

Total number of portfolio holdings		306

Portfolio turnover (%)		10%

Total management fees paid for the year	$	1,809,802

Holdings [Text Block]

(1)

The ratings disclosed are the highest rating given by one of the following national rating agencies: Standard & Poor’s (S&P), Moody’s Investors Service, Inc. (Moody’s) or Fitch, Inc (Fitch). This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Credit ratings are subject to change. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC, CC, C and D are below-investment grade ratings. Holdings designated N/R are not rated by these national ratings agencies.

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

For more complete information, you may review the Fund’s next prospectus, which is expected to be available by September 30, 2026 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000137678 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Minnesota Intermediate Municipal Bond Fund

Class Name

Class C Shares

Trading Symbol

NIBCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class C Shares of the Nuveen Minnesota Intermediate Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en-us/mutual-funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class C Shares	$164	1.60%

Annualized for period less than one year.

Expenses Paid, Amount

$ 164

Expense Ratio, Percent

1.60%

^[2]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Minnesota Intermediate Municipal Bond Fund returned 4.77% for Class C Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund underperformed the S&P Municipal Bond Intermediate Index, which returned 5.92%.

Top contributors to relative performance

•

Sector positioning, especially an overweight to nursing-home bonds and an underweight to industrial development revenue bonds.

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer.

Top detractors from relative performance

•

An overweight to bonds with durations shorter than two years.

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class C Shares at NAV (excluding maximum sales charge)		4.77	%		0.21	%		1.16	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Intermediate Index		5.92	%		1.23	%		2.25	%

Lipper Other States Intermediate Municipal Debt Funds Classification Average		5.12	%		0.52	%		1.40	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 403,405,271

Holdings Count | Holding

306

Advisory Fees Paid, Amount

$ 1,809,802

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	403,405,271

Total number of portfolio holdings		306

Portfolio turnover (%)		10%

Total management fees paid for the year	$	1,809,802

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015134 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Minnesota Intermediate Municipal Bond Fund

Class Name

Class A Shares

Trading Symbol

FAMAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class A Shares of the Nuveen Minnesota Intermediate Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en-us/mutual-funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class A Shares	$82	0.80%

Annualized for period less than one year.

Expenses Paid, Amount

$ 82

Expense Ratio, Percent

0.80%

^[3]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Minnesota Intermediate Municipal Bond Fund returned 5.59% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund underperformed the S&P Municipal Bond Intermediate Index, which returned 5.92%.

Top contributors to relative performance

•

Sector positioning, especially an overweight to nursing-home bonds and an underweight to industrial development revenue bonds.

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer.

Top detractors from relative performance

•

An overweight to bonds with durations shorter than two years.

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class A Shares at NAV (excluding maximum sales charge)		5.59	%		1.00	%		1.81	%

Class A Shares at maximum sales charge (Offering Price)		2.37	%		0.38	%		1.50	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Intermediate Index		5.92	%		1.23	%		2.25	%

Lipper Other States Intermediate Municipal Debt Funds Classification Average		5.12	%		0.52	%		1.40	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 403,405,271

Holdings Count | Holding

306

Advisory Fees Paid, Amount

$ 1,809,802

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	403,405,271

Total number of portfolio holdings		306

Portfolio turnover (%)		10%

Total management fees paid for the year	$	1,809,802

Holdings [Text Block]

(1)

The ratings disclosed are the highest rating given by one of the following national rating agencies: Standard & Poor’s (S&P), Moody’s Investors Service, Inc. (Moody’s) or Fitch, Inc (Fitch). This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Credit ratings are subject to change. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC, CC, C and D are below- investment grade ratings. Holdings designated N/R are not rated by these national ratings agencies.

Credit Ratings Selection [Text Block]

The ratings disclosed are the highest rating given by one of the following national rating agencies: Standard & Poor’s (S&P), Moody’s Investors Service, Inc. (Moody’s) or Fitch, Inc (Fitch). This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Credit ratings are subject to change. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC, CC, C and D are below- investment grade ratings. Holdings designated N/R are not rated by these national ratings agencies.

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015136 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Minnesota Municipal Bond Fund

Class Name

Class A Shares

Trading Symbol

FJMNX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class A Shares of the Nuveen Minnesota Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en-us/mutual-funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class A Shares	$80	0.77%

Annualized for period less than one year.

Expenses Paid, Amount

$ 80

Expense Ratio, Percent

0.77%

^[4]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Minnesota Municipal Bond Fund returned 6.92% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund outperformed the S&P Municipal Bond Minnesota Index, which returned 6.55%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer and an underweight to bonds with durations of six years and shorter.

•

Credit quality positioning, especially overweights to lower-rated and non‑rated bonds.

Top detractors from relative performance

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1-Year			5-Year			10-Year

Class A Shares at NAV (excluding maximum sales charge)		6.92	%		0.65	%		1.87	%

Class A Shares at maximum sales charge (Offering Price)		2.39	%		(0.21	)%		1.43	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Minnesota Index		6.55	%		1.15	%		2.16	%

Lipper Minnesota Municipal Debt Funds Classification Average		7.58	%		0.53	%		1.66	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 760,267,628

Holdings Count | Holding

402

Advisory Fees Paid, Amount

$ 3,320,654

Investment Company Portfolio Turnover

7.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	760,267,628

Total number of portfolio holdings		402

Portfolio turnover (%)		7%

Total management fees paid for the year	$	3,320,654

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000137679 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Minnesota Municipal Bond Fund

Class Name

Class C Shares

Trading Symbol

NTCCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class C Shares of the Nuveen Minnesota Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class C Shares	$162	1.57%

Annualized for period less than one year.

Expenses Paid, Amount

$ 162

Expense Ratio, Percent

1.57%

^[5]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Minnesota Municipal Bond Fund returned 6.08% for Class C Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund underperformed the S&P Municipal Bond Minnesota Index, which returned 6.55%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer and an underweight to bonds with durations of six years and shorter.

•

Credit quality positioning, especially overweights to lower-rated and non‑rated bonds.

Top detractors from relative performance

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class C Shares at NAV (excluding maximum sales charge)		6.08	%		(0.16	)%		1.22	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Minnesota Index		6.55	%		1.15	%		2.16	%

Lipper Minnesota Municipal Debt Funds Classification Average		7.58	%		0.53	%		1.66	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 760,267,628

Holdings Count | Holding

402

Advisory Fees Paid, Amount

$ 3,320,654

Investment Company Portfolio Turnover

7.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	760,267,628

Total number of portfolio holdings		402

Portfolio turnover (%)		7%

Total management fees paid for the year	$	3,320,654

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015138 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Minnesota Municipal Bond Fund

Class Name

Class I Shares

Trading Symbol

FYMNX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class I Shares of the Nuveen Minnesota Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class I Shares	$59	0.57%

Annualized for period less than one year.

Expenses Paid, Amount

$ 59

Expense Ratio, Percent

0.57%

^[6]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Minnesota Municipal Bond Fund returned 7.06% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund outperformed the S&P Municipal Bond Minnesota Index, which returned 6.55%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer and an underweight to bonds with durations of six years and shorter.

•

Credit quality positioning, especially overweights to lower-rated and non‑rated bonds.

Top detractors from relative performance

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class I Shares at NAV		7.06	%		0.84	%		2.07	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Minnesota Index		6.55	%		1.15	%		2.16	%

Lipper Minnesota Municipal Debt Funds Classification Average		7.58	%		0.53	%		1.66	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 760,267,628

Holdings Count | Holding

402

Advisory Fees Paid, Amount

$ 3,320,654

Investment Company Portfolio Turnover

7.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	760,267,628

Total number of portfolio holdings		402

Portfolio turnover (%)		7%

Total management fees paid for the year	$	3,320,654

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015141 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Nebraska Municipal Bond Fund

Class Name

Class I Shares

Trading Symbol

FNTYX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class I Shares of the Nuveen Nebraska Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class I Shares	$62	0.60%

Annualized for period less than one year.

Expenses Paid, Amount

$ 62

Expense Ratio, Percent

0.60%

^[7]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Nebraska Municipal Bond Fund returned 7.54% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund outperformed the S&P Municipal Bond Nebraska Index, which returned 7.01%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer and an underweight to bonds of six years and shorter.

•

Credit quality positioning, especially an overweight to non‑rated bonds and an underweight to A‑rated bonds.

•

Sector positioning, especially an overweight to long-duration local general obligation bonds.

Top detractors from relative performance

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class I Shares at NAV		7.54	%		0.07	%		1.50	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Nebraska Index		7.01	%		1.04	%		2.16	%

Lipper Other States Municipal Debt Funds Classification Average		7.08	%		0.43	%		1.54	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 69,706,898

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 352,775

Investment Company Portfolio Turnover

20.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	69,706,898

Total number of portfolio holdings		93

Portfolio turnover (%)		20%

Total management fees paid for the year	$	352,775

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000137680 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Nebraska Municipal Bond Fund

Class Name

Class C Shares

Trading Symbol

NAAFX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class C Shares of the Nuveen Nebraska Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class C Shares	$165	1.60%

Annualized for period less than one year.

Expenses Paid, Amount

$ 165

Expense Ratio, Percent

1.60%

^[8]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Nebraska Municipal Bond Fund returned 6.39% for Class C Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund underperformed the S&P Municipal Bond Nebraska Index, which returned 7.01%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer and an underweight to bonds of six years and shorter.

•

Credit quality positioning, especially an overweight to non‑rated bonds and an underweight to A‑rated bonds.

•

Sector positioning, especially an overweight to long-duration local general obligation bonds.

Top detractors from relative performance

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class C Shares at NAV (excluding maximum sales charge)		6.39	%		(0.91	)%		0.66	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Nebraska Index		7.01	%		1.04	%		2.16	%

Lipper Other States Municipal Debt Funds Classification Average		7.08	%		0.43	%		1.54	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 69,706,898

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 352,775

Investment Company Portfolio Turnover

20.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	69,706,898

Total number of portfolio holdings		93

Portfolio turnover (%)		20%

Total management fees paid for the year	$	352,775

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015139 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Nebraska Municipal Bond Fund

Class Name

Class A Shares

Trading Symbol

FNTAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class A Shares of the Nuveen Nebraska Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class A Shares	$83	0.80%

Annualized for period less than one year.

Expenses Paid, Amount

$ 83

Expense Ratio, Percent

0.80%

^[9]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Nebraska Municipal Bond Fund returned 7.35% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund outperformed the S&P Municipal Bond Nebraska Index, which returned 7.01%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of eight years and longer and an underweight to bonds of six years and shorter.

•

Credit quality positioning, especially an overweight to non‑rated bonds and an underweight to A‑rated bonds.

•

Sector positioning, especially an overweight to long-duration local general obligation bonds.

Top detractors from relative performance

•

Security selection.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class A Shares at NAV (excluding maximum sales charge)		7.35	%		(0.11	)%		1.30	%

Class A Shares at maximum sales charge (Offering Price)		2.86	%		(0.97	)%		0.86	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Nebraska Index		7.01	%		1.04	%		2.16	%

Lipper Other States Municipal Debt Funds Classification Average		7.08	%		0.43	%		1.54	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 69,706,898

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 352,775

Investment Company Portfolio Turnover

20.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	69,706,898

Total number of portfolio holdings		93

Portfolio turnover (%)		20%

Total management fees paid for the year	$	352,775

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015145 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Oregon Intermediate Municipal Bond Fund

Class Name

Class A Shares

Trading Symbol

FOTAX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class A Shares of the Nuveen Oregon Intermediate Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class A Shares	$82	0.80%

Annualized for period less than one year.

Expenses Paid, Amount

$ 82

Expense Ratio, Percent

0.80%

^[10]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Oregon Intermediate Municipal Bond Fund returned 5.81% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund performed in line with the S&P Municipal Bond Intermediate Index, which returned 5.92%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of six years and longer.

•

Sector positioning, particularly an overweight to the life-care bond sector and an underweight to the industrial development revenue bond sector.

Top detractors from relative performance

•

An overweight to bonds with durations of less than two years.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class A Shares at NAV (excluding maximum sales charge)		5.81	%		0.71	%		1.60	%

Class A Shares at maximum sales charge (Offering Price)		2.60	%		0.10	%		1.29	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Intermediate Index		5.92	%		1.23	%		2.25	%

Lipper Other States Intermediate Municipal Debt Funds Classification Average		5.12	%		0.52	%		1.40	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 238,581,443

Holdings Count | Holding

180

Advisory Fees Paid, Amount

$ 1,047,877

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	238,581,443

Total number of portfolio holdings		180

Portfolio turnover (%)		10%

Total management fees paid for the year	$	1,047,877

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000137681 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Oregon Intermediate Municipal Bond Fund

Class Name

Class C Shares

Trading Symbol

NAFOX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class C Shares of the Nuveen Oregon Intermediate Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class C Shares	$164	1.60%

Annualized for period less than one year.

Expenses Paid, Amount

$ 164

Expense Ratio, Percent

1.60%

^[11]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Oregon Intermediate Municipal Bond Fund returned 4.86% for Class C Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund underperformed the S&P Municipal Bond Intermediate Index, which returned 5.92%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of six years and longer.

•

Sector positioning, particularly an overweight to the life-care bond sector and an underweight to the industrial development revenue bond sector.

Top detractors from relative performance

•

An overweight to bonds with durations of less than two years.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class C Shares at NAV (excluding maximum sales charge)		4.86	%		(0.10	)%		0.94	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Intermediate Index		5.92	%		1.23	%		2.25	%

Lipper Other States Intermediate Municipal Debt Funds Classification Average		5.12	%		0.52	%		1.40	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 238,581,443

Holdings Count | Holding

180

Advisory Fees Paid, Amount

$ 1,047,877

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	238,581,443

Total number of portfolio holdings		180

Portfolio turnover (%)		10%

Total management fees paid for the year	$	1,047,877

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

C000015146 [Member]

Shareholder Report [Line Items]

Fund Name

Nuveen Oregon Intermediate Municipal Bond Fund

Class Name

Class I Shares

Trading Symbol

FORCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the Class I Shares of the Nuveen Oregon Intermediate Municipal Bond Fund for the period of June 1, 2025 to May 31, 2026.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.

Material Fund Change Notice [Text Block]

This report describes changes to the Fund that occurred during the reporting period.

Additional Information Phone Number

(800) 257‑8787

Additional Information Website

https://www.nuveen.com/en-us/mutual-funds/prospectuses

Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)



	Cost of a $10,000 investment	Costs paid as a percentage of $10,000 investment*

Class I Shares	$62	0.60%

Annualized for period less than one year.

Expenses Paid, Amount

$ 62

Expense Ratio, Percent

0.60%

^[12]

Factors Affecting Performance [Text Block]

How did the Fund perform last year? What affected the Fund’s performance?

Performance Highlights

The Nuveen Oregon Intermediate Municipal Bond Fund returned 5.99% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2026. The Fund performed in line with the S&P Municipal Bond Intermediate Index, which returned 5.92%.

Top contributors to relative performance

•

Duration positioning, especially an overweight to bonds with durations of six years and longer.

•

Sector positioning, particularly an overweight to the life-care bond sector and an underweight to the industrial development revenue bond sector.

Top detractors from relative performance

•

An overweight to bonds with durations of less than two years.

Performance Past Does Not Indicate Future [Text]

Performance data shown represents past performance and does not predict or guarantee future results.

Line Graph [Table Text Block]

Average Annual Return [Table Text Block]

Average Annual Total Returns



	1‑Year			5‑Year			10‑Year

Class I Shares at NAV		5.99	%		0.91	%		1.80	%

S&P Municipal Bond Index		6.57	%		1.14	%		2.30	%

S&P Municipal Bond Intermediate Index		5.92	%		1.23	%		2.25	%

Lipper Other States Intermediate Municipal Debt Funds Classification Average		5.12	%		0.52	%		1.40	%

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.

Updated Performance Information Location [Text Block]

For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.

Net Assets

$ 238,581,443

Holdings Count | Holding

180

Advisory Fees Paid, Amount

$ 1,047,877

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of May 31, 2026)



Fund net assets	$	238,581,443

Total number of portfolio holdings		180

Portfolio turnover (%)		10%

Total management fees paid for the year	$	1,047,877

Holdings [Text Block]

(1)

Credit Ratings Selection [Text Block]

Material Fund Change [Text Block]

How has the Fund changed?

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

(800) 257‑8787

Updated Prospectus Web Address

https://www.nuveen.com/en‑us/mutual‑funds/prospectuses

[1]	Annualized for period less than one year.
[2]	Annualized for period less than one year.
[3]	Annualized for period less than one year.
[4]	Annualized for period less than one year.
[5]	Annualized for period less than one year.
[6]	Annualized for period less than one year.
[7]	Annualized for period less than one year.
[8]	Annualized for period less than one year.
[9]	Annualized for period less than one year.
[10]	Annualized for period less than one year.
[11]	Annualized for period less than one year.
[12]	Annualized for period less than one year.