v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
Class A | Banking [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 50.50%
Class A | Utilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Class A | Pipelines [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Class A | Insurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class A | Real Estate [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Class A | Telecommunications [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Class A | Financial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Class A | Health Care [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class A | Consumer Discretionary Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Class A | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Class A | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 51.10%
Class A | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Class A | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class A | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Class A | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Class A | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Class A | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Class A | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class A | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Class A | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Class A | Truist Financial Corp 6669 Series N [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class A | Citigroup Inc 6875 Series G G [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Class A | U B S Group A G 6625 Switzerland [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class A | Royal Bankof Canada 675due 82485brnbspnbspnbspnbspnbsp Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class A | Transcanada Trust 5875due 81576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class A | Enbridge Inc 825due 11584brnbspnbspnbspnbspnbsp Series N C 5 Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class A | H S B C Holdings P L C 705 United Kingdom [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class A | Citigroup Inc 7625 Series A A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class A | B N P Paribas S A 800 France [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class A | Emera Inc 675due 61576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class C | Banking [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 50.50%
Class C | Utilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Class C | Pipelines [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Class C | Insurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class C | Real Estate [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Class C | Telecommunications [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Class C | Financial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Class C | Health Care [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class C | Consumer Discretionary Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Class C | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Class C | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 51.10%
Class C | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Class C | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class C | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Class C | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Class C | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Class C | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Class C | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class C | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Class C | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Class C | Truist Financial Corp 6669 Series N [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class C | Citigroup Inc 6875 Series G G [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Class C | U B S Group A G 6625 Switzerland [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class C | Royal Bankof Canada 675due 82485brnbspnbspnbspnbspnbsp Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class C | Transcanada Trust 5875due 81576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class C | Enbridge Inc 825due 11584brnbspnbspnbspnbspnbsp Series N C 5 Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class C | H S B C Holdings P L C 705 United Kingdom [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class C | Citigroup Inc 7625 Series A A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class C | B N P Paribas S A 800 France [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class C | Emera Inc 675due 61576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class F | Banking [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 50.50%
Class F | Utilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Class F | Pipelines [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Class F | Insurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class F | Real Estate [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Class F | Telecommunications [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Class F | Financial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Class F | Health Care [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class F | Consumer Discretionary Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Class F | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Class F | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 51.10%
Class F | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Class F | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class F | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Class F | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Class F | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Class F | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Class F | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class F | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Class F | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Class F | Truist Financial Corp 6669 Series N [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class F | Citigroup Inc 6875 Series G G [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Class F | U B S Group A G 6625 Switzerland [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class F | Royal Bankof Canada 675due 82485brnbspnbspnbspnbspnbsp Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class F | Transcanada Trust 5875due 81576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class F | Enbridge Inc 825due 11584brnbspnbspnbspnbspnbsp Series N C 5 Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class F | H S B C Holdings P L C 705 United Kingdom [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class F | Citigroup Inc 7625 Series A A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class F | B N P Paribas S A 800 France [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class F | Emera Inc 675due 61576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class I | Banking [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 50.50%
Class I | Utilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Class I | Pipelines [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Class I | Insurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class I | Real Estate [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Class I | Telecommunications [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Class I | Financial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Class I | Health Care [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class I | Consumer Discretionary Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Class I | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Class I | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 51.10%
Class I | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Class I | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class I | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Class I | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Class I | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Class I | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Class I | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class I | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Class I | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Class I | Truist Financial Corp 6669 Series N [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class I | Citigroup Inc 6875 Series G G [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Class I | U B S Group A G 6625 Switzerland [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class I | Royal Bankof Canada 675due 82485brnbspnbspnbspnbspnbsp Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class I | Transcanada Trust 5875due 81576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class I | Enbridge Inc 825due 11584brnbspnbspnbspnbspnbsp Series N C 5 Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class I | H S B C Holdings P L C 705 United Kingdom [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class I | Citigroup Inc 7625 Series A A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class I | B N P Paribas S A 800 France [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class I | Emera Inc 675due 61576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class R | Banking [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 50.50%
Class R | Utilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Class R | Pipelines [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Class R | Insurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class R | Real Estate [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Class R | Telecommunications [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Class R | Financial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Class R | Health Care [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class R | Consumer Discretionary Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Class R | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Class R | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 51.10%
Class R | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Class R | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class R | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Class R | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Class R | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Class R | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Class R | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class R | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Class R | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Class R | Truist Financial Corp 6669 Series N [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class R | Citigroup Inc 6875 Series G G [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Class R | U B S Group A G 6625 Switzerland [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class R | Royal Bankof Canada 675due 82485brnbspnbspnbspnbspnbsp Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class R | Transcanada Trust 5875due 81576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class R | Enbridge Inc 825due 11584brnbspnbspnbspnbspnbsp Series N C 5 Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class R | H S B C Holdings P L C 705 United Kingdom [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class R | Citigroup Inc 7625 Series A A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class R | B N P Paribas S A 800 France [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class R | Emera Inc 675due 61576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class Z | Banking [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 50.50%
Class Z | Utilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Class Z | Pipelines [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Class Z | Insurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class Z | Real Estate [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Class Z | Telecommunications [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Class Z | Financial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Class Z | Health Care [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class Z | Consumer Discretionary Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Class Z | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Class Z | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 51.10%
Class Z | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Class Z | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Class Z | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Class Z | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Class Z | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Class Z | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Class Z | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class Z | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Class Z | Otherincludesshortterminvestments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Class Z | Truist Financial Corp 6669 Series N [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Class Z | Citigroup Inc 6875 Series G G [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Class Z | U B S Group A G 6625 Switzerland [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class Z | Royal Bankof Canada 675due 82485brnbspnbspnbspnbspnbsp Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class Z | Transcanada Trust 5875due 81576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Class Z | Enbridge Inc 825due 11584brnbspnbspnbspnbspnbsp Series N C 5 Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class Z | H S B C Holdings P L C 705 United Kingdom [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class Z | Citigroup Inc 7625 Series A A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Class Z | B N P Paribas S A 800 France [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Class Z | Emera Inc 675due 61576brnbspnbspnbspnbspnbsp Series 16 A Canada [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%