Federated Hermes Municipal Bond Fund Inc. S000009070 [Member] A C000024642 [Member] C C000024644 [Member] F C000051334 [Member] IS C000191101 [Member] S&P® Municipal Bond Index(reflects no deduction for fees, expenses or taxes)[Member] Morningstar Municipal National Long Funds Average[Member] Tax Exempt Securities Risk [Member] Call Risk [Member] Credit Enhancement Risk [Member] Leverage Risk [Member] Liquidity Risk [Member] Prepayment and Extension Risk [Member] Risk of Investing in Derivative Contracts and Hybrid Instruments [Member] Risk Associated with Noninvestment Grade Securities [Member] Risk Related to the Economy [Member] Sector Risk [Member] Tax Risk [Member] Issuer Credit Risk [Member] Counterparty Risk [Member] Interest Rate Risk [Member] Technology Risk [Member]