N A not applicable [Member] N R not rated [Member] BB or Lower [Member] Variable Rate Senior Loan Interests [Member] Lipper Intermediate Municipal Debt Funds Classification Average [Member] S And P Municipal Bond Intermediate Index [Member] S And P Municipal Bond Index [Member] C000001504 [Member] Nuveen Intermediate Duration Municipal Bond Fund - Class I C000137699 [Member] Class C C000000699 [Member] Nuveen Intermediate Duration Municipal Bond Fund - Class A Collateralized Mortgage-Backed Securities [Member] Exchange Traded Funds [Member] Municipal Bonds [Member] Standard & Poor's, BBB Rating [Member] Standard & Poor's, A Rating [Member] Standard & Poor's, AA Rating [Member] Standard & Poor's, AAA Rating [Member] Warrant [Member] C000000700 [Member] Nuveen All-American Municipal Bond Fund - Class A C000137700 [Member] C000171394 [Member] Class R6 C000001507 [Member] Nuveen All-American Municipal Bond Fund - Class I Lipper General And Insured Municipal Debt Funds Classification Average [Member] S And P Municipal Bond Short Intermediate Index [Member] Lipper Short Intermediate Municipal Debt Funds Classification Average [Member] C000001512 [Member] Nuveen Limited Term Municipal Bond Fund - Class I C000137701 [Member] C000000702 [Member] Nuveen Limited Term Municipal Bond Fund - Class A Corporate Bond Securities [Member] Repurchase Agreements [Member] Common Stock [Member] C000000703 [Member] Nuveen High Yield Municipal Bond Fund - Class A C000137702 [Member] C000171395 [Member] C000001515 [Member] Nuveen High Yield Municipal Bond Fund - Class I S And P Municipal Yield Index [Member] Lipper High Yield Municipal Debt Funds Classification Average [Member] Investments Purchased with Collateral from Securities Lending [Member] Repurchase Agreements Securities [Member] S And P Short Duration Municipal Yield Index [Member] C000122986 [Member] Class I C000137704 [Member] Nuveen Short Duration High Yield Municipal Bond Fund - Class C C000122984 [Member] Class A C000149455 [Member] C000149456 [Member] C000149457 [Member] Investment Type [Axis] Net Assets Investment Company Portfolio Turnover No Trading Symbol Flag