XML 31 R2.htm IDEA: XBRL DOCUMENT v3.25.1
Shareholder Report
12 Months Ended
May 31, 2024
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR/A
Amendment Flag true
Amendment Description We are filing an amendment to Form N‑CSR for the following funds, originally filed on August 6, 2024.   1. Nuveen Minnesota Intermediate Municipal Bond Fund   2. Nuveen Minnesota Municipal Bond Fund   3. Nuveen Nebraska Municipal Bond Fund   4. Nuveen Oregon Intermediate Municipal Bond Fund We have amended the original filing because the voting results of matters submitted to fund shareholders for approval at a special meeting held on November 20, 2023 were omitted from Item 9. These results have been included in the amended filing. No other amendments to the original filing have been made.
Registrant Name NUVEEN INVESTMENT FUNDS INC
Entity Central Index Key 0000820892
Entity Investment Company Type N-1A
Document Period End Date May 31, 2024
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, 2023 to May 31, 2024.
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
  $81   0.81%
Expenses Paid, Amount $ 81
Expense Ratio, Percent 0.81%
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 2.27% for Class A shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund outperformed the S&P Municipal Bond Intermediate Index, which returned 1.99%.
 
•  Top contributors to relative performance
 
»   Credit ratings allocation, specifically an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and an overweight to bonds rated A and below, which benefited from narrowing credit spreads.
 
»   Duration positioning, especially an overweight exposure to bonds with the shortest (zero to two years) and longest (10 years and longer) durations, which benefited from the yield curve flattening, and an underweight to bonds with two- to eight-year durations, which lagged.
 
•  Top detractors from relative performance
 
»   Allocation to state general obligation (GO) bonds with six- to eight-year durations, a segment that underperformed.
 
»   Overweight to appropriation-backed bonds, which underperformed.
 
»   Security selection across a range of holdings.
 
Performance Attribution
 
LOGO  Credit ratings allocation
 
LOGO  Short- and long-duration bonds
 
LOGO  State GOs
 
LOGO  Appropriation-backed bonds
 
LOGO  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]
LOGO
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)
     2.27      0.64      1.77
Class A Shares at maximum sales charge (Offering Price)
     (0.81 )%       0.04      1.46
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Intermediate Index
     1.99      0.96      2.09
Lipper Other States Intermediate Municipal Debt Funds Classification Average
     1.84      0.31      1.29
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 $ 321,326,007
Holdings Count | Holding 286
Advisory Fees Paid, Amount $ 1,721,106
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 321,326,007  
Total number of portfolio holdings
     286  
Portfolio turnover (%)
     21%  
Total advisory fees paid for the year
   $ 1,721,106  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager updates: Effective October 13, 2023, Michael Hamilton and Stephen Candido, CFA were added as portfolio managers of the Fund. Effective April 1, 2024, Christopher Drahn retired from Nuveen Asset Management, LLC and no longer serves as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000015135 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Minnesota Intermediate Municipal Bond Fund
Class Name Class I Shares
Trading Symbol FAMTX
Annual or Semi-Annual Statement [Text Block] 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, 2023 to May 31, 2024.
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
  $61   0.61%
Expenses Paid, Amount $ 61
Expense Ratio, Percent 0.61%
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 2.47% for Class I shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund outperformed the S&P Municipal Bond Intermediate Index, which returned 1.99%.
 
•  Top contributors to relative performance
 
»   Credit ratings allocation, specifically an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and an overweight to bonds rated A and below, which benefited from narrowing credit spreads.
 
»   Duration positioning, especially an overweight exposure to bonds with the shortest (zero to two years) and longest (10 years and longer) durations, which benefited from the yield curve flattening, and an underweight to bonds with two- to eight-year durations, which lagged.
 
•  Top detractors from relative performance
 
»   Allocation to state general obligation (GO) bonds with six- to eight-year durations, a segment that underperformed.
 
»   Overweight to appropriation-backed bonds, which underperformed.
 
»   Security selection across a range of holdings.
 
Performance Attribution
 
LOGO  Credit ratings allocation
 
LOGO  Short- and long-duration bonds
 
LOGO  State GOs
 
LOGO  Appropriation-backed bonds
 
LOGO  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]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class I Shares at NAV
     2.47      0.84      1.98
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Intermediate Index
     1.99      0.96      2.09
Lipper Other States Intermediate Municipal Debt Funds Classification Average
     1.84      0.31      1.29
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 $ 321,326,007
Holdings Count | Holding 286
Advisory Fees Paid, Amount $ 1,721,106
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 321,326,007  
Total number of portfolio holdings
     286  
Portfolio turnover (%)
     21%  
Total advisory fees paid for the year
   $ 1,721,106  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager updates: Effective October 13, 2023, Michael Hamilton and Stephen Candido, CFA were added as portfolio managers of the Fund. Effective April 1, 2024, Christopher Drahn retired from Nuveen Asset Management, LLC and no longer serves as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $161   1.61%
Expenses Paid, Amount $ 161
Expense Ratio, Percent 1.61%
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 1.45% for Class C shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund underperformed the S&P Municipal Bond Intermediate Index, which returned 1.99%.
 
•  Top detractors from relative performance
 
»   Allocation to state general obligation (GO) bonds with six- to eight-year durations, a segment that underperformed.
 
»   Overweight to appropriation-backed bonds, which underperformed.
 
»   Security selection across a range of holdings.
 
•  Top contributors to relative performance
 
»   Credit ratings allocation, specifically an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and an overweight to bonds rated A and below, which benefited from narrowing credit spreads.
 
»   Duration positioning, especially an overweight exposure to bonds with the shortest (zero to two years) and longest (10 years and longer) durations, which benefited from the yield curve flattening, and an underweight to bonds with two- to eight-year durations, which lagged.
 
Performance Attribution
 
LOGO  State GOs
 
LOGO  Appropriation-backed bonds
 
LOGO  Security selection
 
LOGO  Credit ratings allocation
 
LOGO  Short- and long-duration bonds
 
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]
LOGO
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)
     1.45      (0.16 )%       1.13
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Intermediate Index
     1.99      0.96      2.09
Lipper Other States Intermediate Municipal Debt Funds Classification Average
     1.84      0.31      1.29
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 $ 321,326,007
Holdings Count | Holding 286
Advisory Fees Paid, Amount $ 1,721,106
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 321,326,007  
Total number of portfolio holdings
     286  
Portfolio turnover (%)
     21%  
Total advisory fees paid for the year
   $ 1,721,106  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager updates: Effective October 13, 2023, Michael Hamilton and Stephen Candido, CFA were added as portfolio managers of the Fund. Effective April 1, 2024, Christopher Drahn retired from Nuveen Asset Management, LLC and no longer serves as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $79   0.79%
Expenses Paid, Amount $ 79
Expense Ratio, Percent 0.79%
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 2.99% for Class A shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund outperformed the S&P Municipal Bond Minnesota Index, which returned 2.10%.
 
•  Top contributors to relative performance
 
»   Duration positioning, particularly an underweight to bonds with four- to eight-year durations and an overweight to the longest-duration bonds.
 
»   Credit ratings allocation, specifically an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and overweight to bonds rated A and lower (especially non-rated), which benefited from narrowing credit spreads.
 
»   Sector and security selection across a diverse group of positions.
 
•  Top detractors from relative performance
 
»   Underweight to zero to two-year duration bonds, a segment that performed well.
 
»   Hospital bonds in the six- to eight-year duration range, which underperformed.
 
Performance Attribution
 
LOGO  Four- to eight-year bonds and long-duration bonds
 
LOGO  Credit ratings allocation
 
LOGO  Sector and security selection
 
LOGO  Zero to two-year bonds
 
LOGO  Hospital bonds
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]
LOGO
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)
     2.99      0.48      2.10
Class A Shares at maximum sales charge (Offering Price)
     (1.35 )%       (0.38 )%       1.66
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Minnesota Index
     2.10      0.82      1.99
Lipper Minnesota Municipal Debt Funds Classification Average
     2.45      0.25      1.57
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 $ 603,793,151
Holdings Count | Holding 375
Advisory Fees Paid, Amount $ 2,827,072
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 603,793,151  
Total number of portfolio holdings
     375  
Portfolio turnover (%)
     26%  
Total advisory fees paid for the year
   $ 2,827,072  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager updates: Effective October 13, 2023, Michael Hamilton and Stephen Candido, CFA were added as portfolio managers of the Fund. Effective April 1, 2024, Christopher Drahn retired from Nuveen Asset Management, LLC and no longer serves as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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   0.59%
Expenses Paid, Amount $ 59
Expense Ratio, Percent 0.59%
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 3.29% for Class I shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund outperformed the S&P Municipal Bond Minnesota Index, which returned 2.10%.
 
•  Top contributors to relative performance
 
»   Duration positioning, particularly an underweight to bonds with four- to eight-year durations and an overweight to the longest-duration bonds.
 
»   Credit ratings allocation, specifically an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and overweight to bonds rated A and lower (especially non-rated), which benefited from narrowing credit spreads.
 
»   Sector and security selection across a diverse group of positions.
 
•  Top detractors from relative performance
 
»   Underweight to zero to two-year duration bonds, a segment that performed well.
 
»   Hospital bonds in the six- to eight-year duration range, which underperformed.
 
Performance Attribution
 
LOGO  Four- to eight-year bonds and long-duration bonds
 
LOGO  Credit ratings allocation
 
LOGO  Sector and security selection
 
LOGO  Zero to two-year bonds
 
LOGO  Hospital bonds
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]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class I Shares at NAV
     3.29      0.69      2.31
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Minnesota Index
     2.10      0.82      1.99
Lipper Minnesota Municipal Debt Funds Classification Average
     2.45      0.25      1.57
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 $ 603,793,151
Holdings Count | Holding 375
Advisory Fees Paid, Amount $ 2,827,072
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 603,793,151  
Total number of portfolio holdings
     375  
Portfolio turnover (%)
     26%  
Total advisory fees paid for the year
   $ 2,827,072  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager updates: Effective October 13, 2023, Michael Hamilton and Stephen Candido, CFA were added as portfolio managers of the Fund. Effective April 1, 2024, Christopher Drahn retired from Nuveen Asset Management, LLC and no longer serves as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $159   1.59%
Expenses Paid, Amount $ 159
Expense Ratio, Percent 1.59%
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 2.16% for Class C shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund performed in line with the S&P Municipal Bond Minnesota Index, which returned 2.10%.
 
•  Top contributors to relative performance
 
»   Duration positioning, particularly an underweight to bonds with four- to eight-year durations and an overweight to the longest-duration bonds.
 
»   Credit ratings allocation, specifically an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and overweight to bonds rated A and lower (especially non-rated), which benefited from narrowing credit spreads.
 
»   Sector and security selection across a diverse group of positions.
 
•  Top detractors from relative performance
 
»   Underweight to zero to two-year duration bonds, a segment that performed well.
 
»   Hospital bonds in the six- to eight-year duration range, which underperformed.
 
Performance Attribution
 
LOGO  Four- to eight-year bonds and long-duration bonds
 
LOGO  Credit ratings allocation
 
LOGO  Sector and security selection
 
LOGO  Zero to two-year bonds
 
LOGO  Hospital bonds
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]
LOGO
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)
     2.16      (0.32 )%       1.45
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Minnesota Index
     2.10      0.82      1.99
Lipper Minnesota Municipal Debt Funds Classification Average
     2.45      0.25      1.57
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 $ 603,793,151
Holdings Count | Holding 375
Advisory Fees Paid, Amount $ 2,827,072
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 603,793,151  
Total number of portfolio holdings
     375  
Portfolio turnover (%)
     26%  
Total advisory fees paid for the year
   $ 2,827,072  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager updates: Effective October 13, 2023, Michael Hamilton and Stephen Candido, CFA were added as portfolio managers of the Fund. Effective April 1, 2024, Christopher Drahn retired from Nuveen Asset Management, LLC and no longer serves as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
 
$81
 
0.81%
Expenses Paid, Amount $ 81
Expense Ratio, Percent 0.81%
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 1.75% for Class A shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund underperformed the S&P Municipal Bond Nebraska Index, which returned 2.41%.
 
•  Top detractors from relative performance
 
»   Overweight to long-duration life care bonds, which underperformed.
 
»   Underweight to the industrial development revenue (IDR) sector, which outperformed.
 
»   Overweight to six- to eight-year duration bonds, which underperformed as the yield curve flattened.
 
•  Top contributors to relative performance
 
»   Duration positioning, especially an overweight to bonds with eight years and longer durations, which benefited from the yield curve flattening.
 
»   Credit ratings allocation, primarily an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and an overweight to bonds rated A and below, including non-rated, which benefited from narrowing credit spreads.
 
Performance Attribution
 
LOGO  Long-duration life care bonds
 
LOGO  IDR sector
 
LOGO  Six- to eight-year duration bonds
 
LOGO  Eight+ year duration bonds
 
LOGO  Credit ratings allocation
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]
LOGO
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)
     1.75      (0.16 )%       1.53
Class A Shares at maximum sales charge (Offering Price)
     (2.56 )%       (1.01 )%       1.09
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Nebraska Index
     2.41      0.80      2.16
Lipper Other States Municipal Debt Funds Classification Average
     2.59      0.29      1.56
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 $ 73,612,168
Holdings Count | Holding 90
Advisory Fees Paid, Amount $ 447,722
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 73,612,168  
Total number of portfolio holdings
     90  
Portfolio turnover (%)
     20%  
Total advisory fees paid for the year
   $ 447,722  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager update: Effective October 13, 2023, Stephen Candido, CFA was added as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $61   0.61%
Expenses Paid, Amount $ 61
Expense Ratio, Percent 0.61%
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 1.95% for Class I shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund underperformed the S&P Municipal Bond Nebraska Index, which returned 2.41%.
 
•  Top detractors from relative performance
 
»   Overweight to long-duration life care bonds, which underperformed.
 
»   Underweight to the industrial development revenue (IDR) sector, which outperformed.
 
»   Overweight to six- to eight-year duration bonds, which underperformed as the yield curve flattened.
 
•  Top contributors to relative performance
 
»   Duration positioning, especially an overweight to bonds with eight years and longer durations, which benefited from the yield curve flattening.
 
»   Credit ratings allocation, primarily an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and an overweight to bonds rated A and below, including non-rated, which benefited from narrowing credit spreads.
 
Performance Attribution
 
LOGO  Long-duration life care bonds
 
LOGO  IDR sector
 
LOGO  Six- to eight-year duration bonds
 
LOGO  Eight+ year duration bonds
 
LOGO  Credit ratings allocation
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]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class I Shares at NAV
     1.95      0.05      1.74
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Nebraska Index
     2.41      0.80      2.16
Lipper Other States Municipal Debt Funds Classification Average
     2.59      0.29      1.56
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 $ 73,612,168
Holdings Count | Holding 90
Advisory Fees Paid, Amount $ 447,722
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 73,612,168  
Total number of portfolio holdings
     90  
Portfolio turnover (%)
     20%  
Total advisory fees paid for the year
   $ 447,722  
Holdings [Text Block]
LOGO
(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?
   
Portfolio manager update: Effective October 13, 2023, Stephen Candido, CFA was added as a portfolio manager of the Fund.
 
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Material Fund Change Expenses [Text Block]
   
Management fees: As of May 1, 2024, the Fund’s overall complex-level fee begins at a maximum rate of 0.1600% of the Fund’s average daily net assets, with breakpoints for eligible complex-level assets above $124.3 billion.
 
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $161   1.61%
Expenses Paid, Amount $ 161
Expense Ratio, Percent 1.61%
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 0.93% for Class C shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund underperformed the S&P Municipal Bond Nebraska Index, which returned 2.41%.
 
•  Top detractors from relative performance
 
»   Overweight to long-duration life care bonds, which underperformed.
 
»   Underweight to the industrial development revenue (IDR) sector, which outperformed.
 
»   Overweight to six- to eight-year duration bonds, which underperformed as the yield curve flattened.
 
•  Top contributors to relative performance
 
»   Duration positioning, especially an overweight to bonds with eight years and longer durations, which benefited from the yield curve flattening.
 
»   Credit ratings allocation, primarily an underweight to the highest credit quality (AAA and AA rated) bonds, which underperformed, and an overweight to bonds rated A and below, including non-rated, which benefited from narrowing credit spreads.
 
Performance Attribution
 
LOGO  Long-duration life care bonds
 
LOGO  IDR sector
 
LOGO  Six- to eight-year duration bonds
 
LOGO  Eight+ year duration bonds
 
LOGO  Credit ratings allocation
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]
LOGO
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)
     0.93      (0.95 )%       0.87
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Nebraska Index
     2.41      0.80      2.16
Lipper Other States Municipal Debt Funds Classification Average
     2.59      0.29      1.56
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 $ 73,612,168
Holdings Count | Holding 90
Advisory Fees Paid, Amount $ 447,722
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 73,612,168  
Total number of portfolio holdings
     90  
Portfolio turnover (%)
     20%  
Total advisory fees paid for the year
   $ 447,722  
Holdings [Text Block]
LOGO
(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?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $84   0.84%
Expenses Paid, Amount $ 84
Expense Ratio, Percent 0.84%
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 2.45% for Class A shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund outperformed the S&P Municipal Bond Intermediate Index, which returned 1.99%.
 
•  Top contributors to relative performance
 
»   Security selection across a diverse group of holdings.
 
»   Duration positioning, particularly an overweight to bonds with zero to two-year durations and an underweight to bonds with six- to eight-year durations.
 
»   Underweight allocation to AAA rated bonds, which underperformed, and an overweight allocation to non-rated bonds, which outperformed as credit spreads narrowed.
 
•  Top detractors from relative performance
 
»   Overweight to AA rated bonds, which underperformed, and underweight allocation to A rated bonds, which outperformed as credit spreads contracted.
 
»   Overweight to the local general obligation (GO) sector, which underperformed.
 
Performance Attribution
 
LOGO  Security selection
 
LOGO  Duration positioning
 
LOGO  AAA rated bonds and non-rated bonds
 
LOGO  AA rated bonds and A rated bonds
 
LOGO  Local GO sector
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]
LOGO
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)
     2.45      0.48      1.49
Class A Shares at maximum sales charge (Offering Price)
     (0.64 )%       (0.12 )%       1.18
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Intermediate Index
     1.99      0.96      2.09
Lipper Other States Intermediate Municipal Debt Funds Classification Average
     1.84      0.31      1.29
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 $ 182,137,946
Holdings Count | Holding 153
Advisory Fees Paid, Amount $ 964,313
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 182,137,946  
Total number of portfolio holdings
     153  
Portfolio turnover (%)
     20%  
Total advisory fees paid for the year
   $ 964,313  
Holdings [Text Block]
LOGO
(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?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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
  $64   0.64%
Expenses Paid, Amount $ 64
Expense Ratio, Percent 0.64%
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 2.64% for Class I shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund outperformed the S&P Municipal Bond Intermediate Index, which returned 1.99%.
 
•  Top contributors to relative performance
 
»   Security selection across a diverse group of holdings.
 
»   Duration positioning, particularly an overweight to bonds with zero to two-year durations and an underweight to bonds with six- to eight-year durations.
 
»   Underweight allocation to AAA rated bonds, which underperformed, and an overweight allocation to non-rated bonds, which outperformed as credit spreads narrowed.
 
•  Top detractors from relative performance
 
»   Overweight to AA rated bonds, which underperformed, and underweight allocation to A rated bonds, which outperformed as credit spreads contracted.
 
»   Overweight to the local general obligation (GO) sector, which underperformed.
 
Performance Attribution
 
LOGO  Security selection
 
LOGO  Duration positioning
 
LOGO  AAA rated bonds and non-rated bonds
 
LOGO  AA rated bonds and A rated bonds
 
LOGO  Local GO sector
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]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class I Shares at NAV
     2.64      0.68      1.70
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Intermediate Index
     1.99      0.96      2.09
Lipper Other States Intermediate Municipal Debt Funds Classification Average
     1.84      0.31      1.29
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 $ 182,137,946
Holdings Count | Holding 153
Advisory Fees Paid, Amount $ 964,313
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 182,137,946  
Total number of portfolio holdings
     153  
Portfolio turnover (%)
     20%  
Total advisory fees paid for the year
   $ 964,313  
Holdings [Text Block]
LOGO
(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?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
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, 2023 to May 31, 2024.
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   1.64%
Expenses Paid, Amount $ 164
Expense Ratio, Percent 1.64%
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 1.52% for Class C shares at net asset value (NAV) for the 12 months ended May 31, 2024. The Fund underperformed the S&P Municipal Bond Intermediate Index, which returned 1.99%.
 
•  Top detractors from relative performance
 
»   Overweight to AA rated bonds, which underperformed, and underweight allocation to A rated bonds, which outperformed as credit spreads contracted.
 
»   Overweight to the local general obligation (GO) sector, which underperformed.
 
•  Top contributors to relative performance
 
»   Security selection across a diverse group of holdings.
 
»   Duration positioning, particularly an overweight to bonds with zero to two-year durations and an underweight to bonds with six- to eight-year durations.
 
»   Underweight allocation to AAA rated bonds, which underperformed, and an overweight allocation to non-rated bonds, which outperformed as credit spreads narrowed.
 
Performance Attribution
 
LOGO  AA rated bonds and A rated bonds
 
LOGO  Local GO sector
 
LOGO  Security selection
 
LOGO  Duration positioning
 
LOGO  AAA rated bonds and non-rated bonds
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]
LOGO
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)
     1.52      (0.32 )%       0.84
S&P Municipal Bond Index
     2.88      1.06      2.30
S&P Municipal Bond Intermediate Index
     1.99      0.96      2.09
Lipper Other States Intermediate Municipal Debt Funds Classification Average
     1.84      0.31      1.29
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 $ 182,137,946
Holdings Count | Holding 153
Advisory Fees Paid, Amount $ 964,313
Investment Company Portfolio Turnover 20.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2024)
Fund net assets
   $ 182,137,946  
Total number of portfolio holdings
     153  
Portfolio turnover (%)
     20%  
Total advisory fees paid for the year
   $ 964,313  
Holdings [Text Block]
LOGO
(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?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2024 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses