v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
C000206057 | Bond futures  
Holdings [Line Items]  
Percent of Net Long Exposure 27.00%
Percent of Net Short Exposure 53.00%
C000206057 | Commodity futures  
Holdings [Line Items]  
Percent of Net Long Exposure 17.00%
Percent of Net Short Exposure 25.00%
C000206057 | Currency forwards  
Holdings [Line Items]  
Percent of Net Long Exposure 76.00%
Percent of Net Short Exposure 118.00%
C000206057 | Equity index futures  
Holdings [Line Items]  
Percent of Net Long Exposure 18.00%
Percent of Net Short Exposure 0.00%
C000206058 | Bond futures  
Holdings [Line Items]  
Percent of Net Long Exposure 27.00%
Percent of Net Short Exposure 53.00%
C000206058 | Commodity futures  
Holdings [Line Items]  
Percent of Net Long Exposure 17.00%
Percent of Net Short Exposure 25.00%
C000206058 | Currency forwards  
Holdings [Line Items]  
Percent of Net Long Exposure 76.00%
Percent of Net Short Exposure 118.00%
C000206058 | Equity index futures  
Holdings [Line Items]  
Percent of Net Long Exposure 18.00%
Percent of Net Short Exposure 0.00%
C000020269 | FR_13013JAX4  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000020269 | FR_13077C4K7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000020269 | FR_544532SM7  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000020269 | FR_88035TRY8  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000020269 | FR_13013JAR7  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000020269 | FR_13013JCM6  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020269 | FR_31350ADA3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020269 | FR_13013JDD5  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000020269 | FR_650116CH7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000020269 | FR_544562DS7  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020269 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000020269 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 40.30%
C000020269 | A/A  
Holdings [Line Items]  
Percent of Total Investments 29.60%
C000020269 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000020269 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000020269 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000020269 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000020269 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000020269 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 27.40%
C000020269 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000020269 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000020269 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000150654 | FR_13013JAX4  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000150654 | FR_13077C4K7  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000150654 | FR_544532SM7  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000150654 | FR_88035TRY8  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000150654 | FR_13013JAR7  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000150654 | FR_13013JCM6  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000150654 | FR_31350ADA3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000150654 | FR_13013JDD5  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000150654 | FR_650116CH7  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000150654 | FR_544562DS7  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000150654 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000150654 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 40.30%
C000150654 | A/A  
Holdings [Line Items]  
Percent of Total Investments 29.60%
C000150654 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 20.30%
C000150654 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000150654 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000150654 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000150654 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000150654 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 27.40%
C000150654 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 22.30%
C000150654 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 24.00%
C000150654 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000020272 | FR_13032UKD9  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020272 | FR_13013JGR1  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020272 | FR_13063C5D8  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000020272 | FR_801155RR5  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000020272 | FR_13048VF37  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000020272 | FR_13034A5L0  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020272 | FR_544532MW1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020272 | FR_421294EH8  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020272 | FR_79766DRK7  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020272 | FR_64972JJB5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020272 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 2.00%
C000020272 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 28.30%
C000020272 | A/A  
Holdings [Line Items]  
Percent of Total Investments 33.80%
C000020272 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000020272 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000020272 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000020272 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 11.00%
C000020272 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 26.90%
C000020272 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000020272 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 6.50%
C000020272 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 33.80%
C000020272 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000020272 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000020272 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.60%
C000020274 | FR_13032UKD9  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020274 | FR_13013JGR1  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020274 | FR_13063C5D8  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000020274 | FR_801155RR5  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000020274 | FR_13048VF37  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000020274 | FR_13034A5L0  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020274 | FR_544532MW1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020274 | FR_421294EH8  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020274 | FR_79766DRK7  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020274 | FR_64972JJB5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020274 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 2.00%
C000020274 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 28.30%
C000020274 | A/A  
Holdings [Line Items]  
Percent of Total Investments 33.80%
C000020274 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000020274 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000020274 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000020274 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 11.00%
C000020274 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 26.90%
C000020274 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000020274 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 6.50%
C000020274 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 33.80%
C000020274 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000020274 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000020274 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.60%
C000150655 | FR_13032UKD9  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000150655 | FR_13013JGR1  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000150655 | FR_13063C5D8  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000150655 | FR_801155RR5  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000150655 | FR_13048VF37  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000150655 | FR_13034A5L0  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000150655 | FR_544532MW1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000150655 | FR_421294EH8  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000150655 | FR_79766DRK7  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000150655 | FR_64972JJB5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000150655 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 2.00%
C000150655 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 28.30%
C000150655 | A/A  
Holdings [Line Items]  
Percent of Total Investments 33.80%
C000150655 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000150655 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000150655 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000150655 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 11.00%
C000150655 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 26.90%
C000150655 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000150655 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 6.50%
C000150655 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 33.80%
C000150655 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000150655 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000150655 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.60%
C000122981 | FR_04108WCJ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000122981 | FR_4636324H9  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000122981 | FR_64542UHF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000122981 | FR_11943KEV0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | FR_12008EUT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | FR_52349EEQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | FR_167505ZM1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | FR_60733UAA9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | FR_744396LE0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122981 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000122981 | A/A  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000122981 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 22.60%
C000122981 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000122981 | B/B  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000122981 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 51.40%
C000122981 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000122981 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000122981 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000122981 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.90%
C000122981 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 37.90%
C000122981 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 18.00%
C000122981 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000122981 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000122982 | FR_04108WCJ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000122982 | FR_4636324H9  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000122982 | FR_64542UHF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000122982 | FR_11943KEV0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | FR_12008EUT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | FR_52349EEQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | FR_167505ZM1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | FR_60733UAA9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | FR_744396LE0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122982 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000122982 | A/A  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000122982 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 22.60%
C000122982 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000122982 | B/B  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000122982 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 51.40%
C000122982 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000122982 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000122982 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000122982 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.90%
C000122982 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 37.90%
C000122982 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 18.00%
C000122982 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000122982 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000205252 | FR_04108WCJ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000205252 | FR_4636324H9  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000205252 | FR_64542UHF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000205252 | FR_11943KEV0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | FR_12008EUT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | FR_52349EEQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | FR_167505ZM1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | FR_60733UAA9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | FR_744396LE0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205252 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000205252 | A/A  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000205252 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 22.60%
C000205252 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000205252 | B/B  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000205252 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 51.40%
C000205252 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000205252 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000205252 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000205252 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.90%
C000205252 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 37.90%
C000205252 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 18.00%
C000205252 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000205252 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000122980 | FR_04108WCJ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000122980 | FR_4636324H9  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000122980 | FR_64542UHF4  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000122980 | FR_11943KEV0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | FR_12008EUT1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | FR_52349EEQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | FR_167505ZM1  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | FR_60733UAA9  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | FR_744396LE0  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000122980 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000122980 | A/A  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000122980 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 22.60%
C000122980 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000122980 | B/B  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000122980 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 51.40%
C000122980 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000122980 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000122980 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000122980 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.90%
C000122980 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 37.90%
C000122980 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 18.00%
C000122980 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 21.20%
C000122980 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000053352 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000053352 | FR_97712DQR0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000053352 | FR_20282EAS5  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000053352 | FR_072024ST0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000053352 | FR_23503CBM8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000053352 | FR_194234D49  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000053352 | FR_744387AD3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000053352 | FR_837151S91  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000053352 | FR_494782KJ3  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000053352 | FR_494782KG9  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000053352 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000053352 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 35.20%
C000053352 | A/A  
Holdings [Line Items]  
Percent of Total Investments 36.90%
C000053352 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 16.40%
C000053352 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000053352 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000053352 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000053352 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 20.50%
C000053352 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 14.00%
C000053352 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 21.00%
C000053352 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000053352 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 16.20%
C000053352 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000053353 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000053353 | FR_97712DQR0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000053353 | FR_20282EAS5  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000053353 | FR_072024ST0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000053353 | FR_23503CBM8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000053353 | FR_194234D49  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000053353 | FR_744387AD3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000053353 | FR_837151S91  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000053353 | FR_494782KJ3  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000053353 | FR_494782KG9  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000053353 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000053353 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 35.20%
C000053353 | A/A  
Holdings [Line Items]  
Percent of Total Investments 36.90%
C000053353 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 16.40%
C000053353 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000053353 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000053353 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000053353 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 20.50%
C000053353 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 14.00%
C000053353 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 21.00%
C000053353 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000053353 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 16.20%
C000053353 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000205243 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205243 | FR_97712DQR0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000205243 | FR_20282EAS5  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000205243 | FR_072024ST0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205243 | FR_23503CBM8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205243 | FR_194234D49  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205243 | FR_744387AD3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205243 | FR_837151S91  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000205243 | FR_494782KJ3  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000205243 | FR_494782KG9  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000205243 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000205243 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 35.20%
C000205243 | A/A  
Holdings [Line Items]  
Percent of Total Investments 36.90%
C000205243 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 16.40%
C000205243 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000205243 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000205243 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000205243 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 20.50%
C000205243 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 14.00%
C000205243 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 21.00%
C000205243 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000205243 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 16.20%
C000205243 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000064976 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000064976 | FR_97712DQR0  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000064976 | FR_20282EAS5  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000064976 | FR_072024ST0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000064976 | FR_23503CBM8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064976 | FR_194234D49  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000064976 | FR_744387AD3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000064976 | FR_837151S91  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000064976 | FR_494782KJ3  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000064976 | FR_494782KG9  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000064976 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000064976 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 35.20%
C000064976 | A/A  
Holdings [Line Items]  
Percent of Total Investments 36.90%
C000064976 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 16.40%
C000064976 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000064976 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000064976 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000064976 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 20.50%
C000064976 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 14.00%
C000064976 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 21.00%
C000064976 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000064976 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 16.20%
C000064976 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000020281 | FR_771902HM8  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000020281 | FR_60406XAJ0  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000020281 | FR_771902JC8  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020281 | FR_60412AP98  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020281 | FR_771902HR7  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020281 | FR_604140XW8  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000020281 | FR_930256AK8  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020281 | FR_78916VET3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020281 | FR_60416TXX1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000020281 | FR_425507QC7  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020281 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 19.20%
C000020281 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 34.80%
C000020281 | A/A  
Holdings [Line Items]  
Percent of Total Investments 24.70%
C000020281 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 12.20%
C000020281 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000020281 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000020281 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000020281 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 19.10%
C000020281 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000020281 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.20%
C000020281 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 45.70%
C000020281 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 5.30%
C000020281 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000176497 | FR_771902HM8  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000176497 | FR_60406XAJ0  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000176497 | FR_771902JC8  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000176497 | FR_60412AP98  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000176497 | FR_771902HR7  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000176497 | FR_604140XW8  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000176497 | FR_930256AK8  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000176497 | FR_78916VET3  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000176497 | FR_60416TXX1  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000176497 | FR_425507QC7  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000176497 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 19.20%
C000176497 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 34.80%
C000176497 | A/A  
Holdings [Line Items]  
Percent of Total Investments 24.70%
C000176497 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 12.20%
C000176497 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000176497 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000176497 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000176497 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 19.10%
C000176497 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000176497 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.20%
C000176497 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 45.70%
C000176497 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 5.30%
C000176497 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000020296 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020296 | FR_180848XJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020296 | FR_759136TH7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020296 | FR_7352404G5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020296 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020296 | FR_6678255Y5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020296 | FR_88283PAM9  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020296 | FR_882854Q70  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020296 | FR_592247J50  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020296 | FR_30382VAY2  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020296 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000020296 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000020296 | A/A  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000020296 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000020296 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000020296 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000020296 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000020296 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 18.20%
C000020296 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000020296 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.30%
C000020296 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 43.30%
C000020296 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.40%
C000020296 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000020296 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000020293 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020293 | FR_180848XJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020293 | FR_759136TH7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020293 | FR_7352404G5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020293 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020293 | FR_6678255Y5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020293 | FR_88283PAM9  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020293 | FR_882854Q70  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020293 | FR_592247J50  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020293 | FR_30382VAY2  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020293 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000020293 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000020293 | A/A  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000020293 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000020293 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000020293 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000020293 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000020293 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 18.20%
C000020293 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000020293 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.30%
C000020293 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 43.30%
C000020293 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.40%
C000020293 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000020293 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000020295 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020295 | FR_180848XJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020295 | FR_759136TH7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020295 | FR_7352404G5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020295 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020295 | FR_6678255Y5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020295 | FR_88283PAM9  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000020295 | FR_882854Q70  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020295 | FR_592247J50  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020295 | FR_30382VAY2  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000020295 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000020295 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000020295 | A/A  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000020295 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000020295 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000020295 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000020295 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000020295 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 18.20%
C000020295 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000020295 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.30%
C000020295 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 43.30%
C000020295 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.40%
C000020295 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000020295 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000205244 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000205244 | FR_180848XJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000205244 | FR_759136TH7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000205244 | FR_7352404G5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000205244 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000205244 | FR_6678255Y5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000205244 | FR_88283PAM9  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000205244 | FR_882854Q70  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000205244 | FR_592247J50  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000205244 | FR_30382VAY2  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000205244 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000205244 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000205244 | A/A  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000205244 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000205244 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000205244 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000205244 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000205244 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 18.20%
C000205244 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000205244 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.30%
C000205244 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 43.30%
C000205244 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.40%
C000205244 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000205244 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000064978 | FR_09182TEW3  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000064978 | FR_180848XJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000064978 | FR_759136TH7  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000064978 | FR_7352404G5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000064978 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000064978 | FR_6678255Y5  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000064978 | FR_88283PAM9  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000064978 | FR_882854Q70  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000064978 | FR_592247J50  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000064978 | FR_30382VAY2  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000064978 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000064978 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000064978 | A/A  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000064978 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000064978 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000064978 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000064978 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000064978 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 18.20%
C000064978 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 12.50%
C000064978 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 12.30%
C000064978 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 43.30%
C000064978 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 11.40%
C000064978 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000064978 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000089441 | FR_514045W66  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000089441 | FR_725209UE8  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000089441 | FR_70917TSS1  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000089441 | FR_246579LZ7  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000089441 | FR_663507DJ7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000089441 | FR_70914P6E7  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000089441 | FR_01728A3Z7  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000089441 | FR_709225VP8  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000089441 | FR_250057PK6  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000089441 | FR_70869PQB6  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000089441 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 43.40%
C000089441 | A/A  
Holdings [Line Items]  
Percent of Total Investments 35.50%
C000089441 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 15.70%
C000089441 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000089441 | Not rated  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000089441 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 21.70%
C000089441 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 10.60%
C000089441 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 15.60%
C000089441 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 32.30%
C000089441 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000089441 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000089444 | FR_514045W66  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000089444 | FR_725209UE8  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000089444 | FR_70917TSS1  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000089444 | FR_246579LZ7  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000089444 | FR_663507DJ7  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000089444 | FR_70914P6E7  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000089444 | FR_01728A3Z7  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000089444 | FR_709225VP8  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000089444 | FR_250057PK6  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000089444 | FR_70869PQB6  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000089444 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 43.40%
C000089444 | A/A  
Holdings [Line Items]  
Percent of Total Investments 35.50%
C000089444 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 15.70%
C000089444 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000089444 | Not rated  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000089444 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 21.70%
C000089444 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 10.60%
C000089444 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 15.60%
C000089444 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 32.30%
C000089444 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 14.20%
C000089444 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000064979 | FR_0342806P7  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000064979 | FR_68609UKK0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000064979 | FR_88283KBQ0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000064979 | FR_09182TDU8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064979 | FR_452152P96  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064979 | FR_54640TAN9  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064979 | FR_594698TD4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064979 | FR_20775JFM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064979 | FR_072024XT4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064979 | FR_84247PND9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000064979 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000064979 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 33.90%
C000064979 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000064979 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 17.00%
C000064979 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000064979 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000064979 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000064979 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000064979 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 36.40%
C000064979 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 29.60%
C000064979 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 25.20%
C000064979 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000064979 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000020338 | FR_0342806P7  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000020338 | FR_68609UKK0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000020338 | FR_88283KBQ0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000020338 | FR_09182TDU8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020338 | FR_452152P96  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020338 | FR_54640TAN9  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020338 | FR_594698TD4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020338 | FR_20775JFM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020338 | FR_072024XT4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020338 | FR_84247PND9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000020338 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000020338 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 33.90%
C000020338 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000020338 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 17.00%
C000020338 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000020338 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000020338 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000020338 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000020338 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 36.40%
C000020338 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 29.60%
C000020338 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 25.20%
C000020338 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000020338 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000205246 | FR_0342806P7  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000205246 | FR_68609UKK0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205246 | FR_88283KBQ0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205246 | FR_09182TDU8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205246 | FR_452152P96  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205246 | FR_54640TAN9  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205246 | FR_594698TD4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205246 | FR_20775JFM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205246 | FR_072024XT4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205246 | FR_84247PND9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205246 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000205246 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 33.90%
C000205246 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000205246 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 17.00%
C000205246 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000205246 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000205246 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000205246 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000205246 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 36.40%
C000205246 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 29.60%
C000205246 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 25.20%
C000205246 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000205246 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000064980 | FR_0342806P7  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000064980 | FR_68609UKK0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000064980 | FR_88283KBQ0  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000064980 | FR_09182TDU8  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064980 | FR_452152P96  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064980 | FR_54640TAN9  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064980 | FR_594698TD4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064980 | FR_20775JFM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064980 | FR_072024XT4  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000064980 | FR_84247PND9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000064980 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000064980 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 33.90%
C000064980 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000064980 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 17.00%
C000064980 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 2.30%
C000064980 | B/B  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000064980 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000064980 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000064980 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 36.40%
C000064980 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 29.60%
C000064980 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 25.20%
C000064980 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000064980 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000089514 | FR_13013JCM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089514 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089514 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000089514 | FR_167486S83  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000089514 | FR_74448XCP5  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000089514 | FR_60637ATR3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000089514 | FR_23542JAN5  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089514 | FR_154872AY1  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089514 | FR_74440DCM4  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089514 | FR_79625GNE9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089514 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000089514 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 31.80%
C000089514 | A/A  
Holdings [Line Items]  
Percent of Total Investments 26.70%
C000089514 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000089514 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000089514 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000089514 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 9.80%
C000089514 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 23.20%
C000089514 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 20.70%
C000089514 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 18.50%
C000089514 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000089514 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000089514 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000089514 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000089516 | FR_13013JCM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089516 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089516 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000089516 | FR_167486S83  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000089516 | FR_74448XCP5  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000089516 | FR_60637ATR3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000089516 | FR_23542JAN5  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089516 | FR_154872AY1  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089516 | FR_74440DCM4  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089516 | FR_79625GNE9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000089516 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000089516 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 31.80%
C000089516 | A/A  
Holdings [Line Items]  
Percent of Total Investments 26.70%
C000089516 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000089516 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000089516 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000089516 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 9.80%
C000089516 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 23.20%
C000089516 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 20.70%
C000089516 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 18.50%
C000089516 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000089516 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000089516 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000089516 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000205251 | FR_13013JCM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205251 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205251 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000205251 | FR_167486S83  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000205251 | FR_74448XCP5  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205251 | FR_60637ATR3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205251 | FR_23542JAN5  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205251 | FR_154872AY1  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205251 | FR_74440DCM4  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205251 | FR_79625GNE9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000205251 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000205251 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 31.80%
C000205251 | A/A  
Holdings [Line Items]  
Percent of Total Investments 26.70%
C000205251 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000205251 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000205251 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000205251 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 9.80%
C000205251 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 23.20%
C000205251 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 20.70%
C000205251 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 18.50%
C000205251 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000205251 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000205251 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000205251 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000123112 | FR_13013JCM6  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000123112 | FR_84136JAL3  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000123112 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000123112 | FR_167486S83  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000123112 | FR_74448XCP5  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000123112 | FR_60637ATR3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000123112 | FR_23542JAN5  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000123112 | FR_154872AY1  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000123112 | FR_74440DCM4  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000123112 | FR_79625GNE9  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000123112 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000123112 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 31.80%
C000123112 | A/A  
Holdings [Line Items]  
Percent of Total Investments 26.70%
C000123112 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000123112 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000123112 | B/B  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000123112 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 9.80%
C000123112 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 23.20%
C000123112 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 20.70%
C000123112 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 18.50%
C000123112 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 28.10%
C000123112 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000123112 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000123112 | 30+ years  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000020340 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000020340 | FR_64987KBA5  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020340 | FR_97712D6X9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020340 | FR_46640KS62  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020340 | FR_735220AW5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020340 | FR_778542AK6  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000020340 | FR_88035TLP3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000020340 | FR_20775DU59  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020340 | FR_46640K4K7  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020340 | FR_65820AAP3  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020340 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000020340 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 43.10%
C000020340 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000020340 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000020340 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000020340 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000020340 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000020340 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 66.00%
C000020340 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 24.90%
C000020340 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000020340 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000220296 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000220296 | FR_64987KBA5  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000220296 | FR_97712D6X9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000220296 | FR_46640KS62  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000220296 | FR_735220AW5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000220296 | FR_778542AK6  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000220296 | FR_88035TLP3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000220296 | FR_20775DU59  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000220296 | FR_46640K4K7  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000220296 | FR_65820AAP3  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000220296 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000220296 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 43.10%
C000220296 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000220296 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000220296 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000220296 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000220296 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000220296 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 66.00%
C000220296 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 24.90%
C000220296 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000220296 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000205247 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000205247 | FR_64987KBA5  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000205247 | FR_97712D6X9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000205247 | FR_46640KS62  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000205247 | FR_735220AW5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000205247 | FR_778542AK6  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000205247 | FR_88035TLP3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000205247 | FR_20775DU59  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205247 | FR_46640K4K7  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205247 | FR_65820AAP3  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000205247 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000205247 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 43.10%
C000205247 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000205247 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000205247 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000205247 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000205247 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000205247 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 66.00%
C000205247 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 24.90%
C000205247 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000205247 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000020341 | FR_56035DDP4  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000020341 | FR_64987KBA5  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000020341 | FR_97712D6X9  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000020341 | FR_46640KS62  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020341 | FR_735220AW5  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000020341 | FR_778542AK6  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000020341 | FR_88035TLP3  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000020341 | FR_20775DU59  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020341 | FR_46640K4K7  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020341 | FR_65820AAP3  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000020341 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000020341 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 43.10%
C000020341 | A/A  
Holdings [Line Items]  
Percent of Total Investments 34.60%
C000020341 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000020341 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000020341 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000020341 | CCC/Caa and below  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000020341 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 66.00%
C000020341 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 24.90%
C000020341 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 8.70%
C000020341 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000064975 | FR_038127AW6  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
C000064975 | FR_97712JGT4  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000064975 | FR_97712DA63  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000064975 | FR_97712D3P9  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000064975 | FR_831459BT8  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000064975 | FR_97712DEV4  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000064975 | FR_97689RFB5  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000064975 | FR_976595FV5  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000064975 | FR_045142DL7  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000064975 | FR_97689RED2  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000064975 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000064975 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000064975 | A/A  
Holdings [Line Items]  
Percent of Total Investments 38.50%
C000064975 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000064975 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000064975 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.90%
C000064975 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 32.20%
C000064975 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 6.00%
C000064975 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000064975 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 24.20%
C000064975 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 17.70%
C000064975 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000176498 | FR_038127AW6  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
C000176498 | FR_97712JGT4  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000176498 | FR_97712DA63  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000176498 | FR_97712D3P9  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000176498 | FR_831459BT8  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000176498 | FR_97712DEV4  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000176498 | FR_97689RFB5  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000176498 | FR_976595FV5  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000176498 | FR_045142DL7  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000176498 | FR_97689RED2  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000176498 | AAA/Aaa  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000176498 | AA/Aa  
Holdings [Line Items]  
Percent of Total Investments 30.90%
C000176498 | A/A  
Holdings [Line Items]  
Percent of Total Investments 38.50%
C000176498 | BBB/Baa  
Holdings [Line Items]  
Percent of Total Investments 25.30%
C000176498 | BB/Ba  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000176498 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.90%
C000176498 | 0-1 year  
Holdings [Line Items]  
Percent of Total Investments 32.20%
C000176498 | 1-3 years  
Holdings [Line Items]  
Percent of Total Investments 6.00%
C000176498 | 3-5 years  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000176498 | 5-10 years  
Holdings [Line Items]  
Percent of Total Investments 24.20%
C000176498 | 10-20 years  
Holdings [Line Items]  
Percent of Total Investments 17.70%
C000176498 | 20-30 years  
Holdings [Line Items]  
Percent of Total Investments 8.40%