Agency Collateralized Mortgage Obligations [Member] Supranational Banks [Member] Non Agency Commercial Mortgage Backed Security [Member] Government Agency Obligations [Member] Loan Agreements [Member] C000010996 [Member] Institutional Class C000010995 [Member] Class R C000010994 [Member] Class C C000010992 [Member] Class A Common Stock [Member] Sovereign Debt [Member] Collateralized Loan Obligations [Member] Corporate Bond Securities [Member] ARGENTINA BRAZIL CHILE GUATEMALA INDIA KOREA, REPUBLIC OF MEXICO SAUDI ARABIA TÜRKIYE Türkiye UNITED ARAB EMIRATES Banking [Member] Oil and Gas [Member] Consumer Sector [Member] Energy Sector [Member] Financial Services Sector [Member] C000130079 [Member] C000130080 [Member] C000130082 [Member] Technology Media and Telecommunication [Member] Basic Industry [Member] Metals and Mining [Member] Investment Type [Axis] Net Assets Investment Company Portfolio Turnover No Trading Symbol Flag