Shareholder Report, Holdings (Details)
|
Jun. 30, 2026 |
| C000022342 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| C000022342 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
47.40%
|
| C000022342 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| C000022342 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.40%
|
| C000022342 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000022342 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.20%
|
| C000022342 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.00%
|
| C000022342 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000022342 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| C000022342 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| C000022342 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000022342 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
47.40%
|
| C000022342 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.00%
|
| C000022342 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.30%
|
| C000022342 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000022342 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000117966 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| C000117966 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
47.40%
|
| C000117966 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| C000117966 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.40%
|
| C000117966 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000117966 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.20%
|
| C000117966 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.00%
|
| C000117966 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000117966 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| C000117966 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| C000117966 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000117966 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
47.40%
|
| C000117966 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.00%
|
| C000117966 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.30%
|
| C000117966 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000117966 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000117965 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| C000117965 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
47.40%
|
| C000117965 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| C000117965 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.40%
|
| C000117965 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000117965 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.20%
|
| C000117965 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.00%
|
| C000117965 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000117965 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| C000117965 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| C000117965 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000117965 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
47.40%
|
| C000117965 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.00%
|
| C000117965 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.30%
|
| C000117965 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| C000117965 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022375 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.90%
|
| C000022375 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.40%
|
| C000022375 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.30%
|
| C000022375 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022375 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.40%
|
| C000022375 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.50%
|
| C000022375 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.70%
|
| C000022375 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.00%
|
| C000022375 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022375 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022375 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| C000022375 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.80%
|
| C000022375 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022375 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.60%
|
| C000022375 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.90%
|
| C000022375 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.30%
|
| C000022375 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.00%
|
| C000022375 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
26.80%
|
| C000022375 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022376 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.90%
|
| C000022376 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.40%
|
| C000022376 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.30%
|
| C000022376 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022376 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.40%
|
| C000022376 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.50%
|
| C000022376 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.70%
|
| C000022376 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.00%
|
| C000022376 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022376 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022376 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| C000022376 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.80%
|
| C000022376 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022376 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.60%
|
| C000022376 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.90%
|
| C000022376 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.30%
|
| C000022376 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.00%
|
| C000022376 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
26.80%
|
| C000022376 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022374 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.90%
|
| C000022374 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.40%
|
| C000022374 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.30%
|
| C000022374 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022374 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.40%
|
| C000022374 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.50%
|
| C000022374 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.70%
|
| C000022374 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.00%
|
| C000022374 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022374 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022374 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| C000022374 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.80%
|
| C000022374 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022374 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.60%
|
| C000022374 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.90%
|
| C000022374 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.30%
|
| C000022374 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.00%
|
| C000022374 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
26.80%
|
| C000022374 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022418 [Member] | Other countries [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.90%
|
| C000022418 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| C000022418 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.80%
|
| C000022418 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022418 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| C000022418 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
16.30%
|
| C000022418 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.00%
|
| C000022418 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.60%
|
| C000022418 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
16.50%
|
| C000022418 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| C000022418 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022418 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.40%
|
| C000022418 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.60%
|
| C000022418 [Member] | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
58.60%
|
| C000022418 [Member] | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.50%
|
| C000022418 [Member] | NEW ZEALAND |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.50%
|
| C000022418 [Member] | MEXICO |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.50%
|
| C000022418 [Member] | KOREA, REPUBLIC OF |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022418 [Member] | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022418 [Member] | INDONESIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022418 [Member] | CZECHIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.60%
|
| C000022418 [Member] | COLOMBIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022418 [Member] | BRAZIL |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.60%
|
| C000022418 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.80%
|
| C000022418 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022418 [Member] | Convertible bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022418 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
35.30%
|
| C000022418 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.70%
|
| C000022418 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022418 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022418 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| C000022418 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022418 [Member] | Equity [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022418 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| C000022418 [Member] | Exchange Traded Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022418 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.30%
|
| C000022420 [Member] | Other countries [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.90%
|
| C000022420 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| C000022420 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.80%
|
| C000022420 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022420 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| C000022420 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
16.30%
|
| C000022420 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.00%
|
| C000022420 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.60%
|
| C000022420 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
16.50%
|
| C000022420 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| C000022420 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022420 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.40%
|
| C000022420 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.60%
|
| C000022420 [Member] | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
58.60%
|
| C000022420 [Member] | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.50%
|
| C000022420 [Member] | NEW ZEALAND |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.50%
|
| C000022420 [Member] | MEXICO |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.50%
|
| C000022420 [Member] | KOREA, REPUBLIC OF |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022420 [Member] | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022420 [Member] | INDONESIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022420 [Member] | CZECHIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.60%
|
| C000022420 [Member] | COLOMBIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022420 [Member] | BRAZIL |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.60%
|
| C000022420 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.80%
|
| C000022420 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022420 [Member] | Convertible bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022420 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
35.30%
|
| C000022420 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.70%
|
| C000022420 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022420 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022420 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| C000022420 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022420 [Member] | Equity [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022420 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| C000022420 [Member] | Exchange Traded Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022420 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.30%
|
| C000022419 [Member] | Other countries [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.90%
|
| C000022419 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| C000022419 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.80%
|
| C000022419 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022419 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| C000022419 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
16.30%
|
| C000022419 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.00%
|
| C000022419 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.60%
|
| C000022419 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
16.50%
|
| C000022419 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| C000022419 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022419 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.40%
|
| C000022419 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.60%
|
| C000022419 [Member] | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
58.60%
|
| C000022419 [Member] | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.50%
|
| C000022419 [Member] | NEW ZEALAND |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.50%
|
| C000022419 [Member] | MEXICO |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.50%
|
| C000022419 [Member] | KOREA, REPUBLIC OF |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022419 [Member] | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022419 [Member] | INDONESIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022419 [Member] | CZECHIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.60%
|
| C000022419 [Member] | COLOMBIA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| C000022419 [Member] | BRAZIL |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.60%
|
| C000022419 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.80%
|
| C000022419 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022419 [Member] | Convertible bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.70%
|
| C000022419 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
35.30%
|
| C000022419 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.70%
|
| C000022419 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022419 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022419 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| C000022419 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022419 [Member] | Equity [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022419 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| C000022419 [Member] | Exchange Traded Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022419 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.30%
|
| C000022431 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.20%
|
| C000022431 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| C000022431 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022431 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.80%
|
| C000022431 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| C000022431 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.80%
|
| C000022431 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.80%
|
| C000022431 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022431 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022431 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000022431 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022431 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000022431 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000022431 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000022431 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000022431 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| C000022431 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022431 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000022431 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| C000022431 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022431 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
41.00%
|
| C000022431 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000022432 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.20%
|
| C000022432 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| C000022432 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022432 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.80%
|
| C000022432 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| C000022432 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.80%
|
| C000022432 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.80%
|
| C000022432 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022432 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022432 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000022432 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022432 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000022432 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000022432 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000022432 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000022432 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| C000022432 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022432 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000022432 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| C000022432 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022432 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
41.00%
|
| C000022432 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000022430 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.20%
|
| C000022430 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| C000022430 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022430 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.80%
|
| C000022430 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| C000022430 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.80%
|
| C000022430 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.80%
|
| C000022430 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022430 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022430 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000022430 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022430 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000022430 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000022430 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000022430 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000022430 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| C000022430 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000022430 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000022430 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| C000022430 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022430 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
41.00%
|
| C000022430 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| C000022446 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
42.50%
|
| C000022446 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
40.90%
|
| C000022446 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000022446 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000022446 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000022446 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.90%
|
| C000022446 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022446 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| C000022446 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
94.80%
|
| C000022446 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000022448 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
42.50%
|
| C000022448 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
40.90%
|
| C000022448 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000022448 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000022448 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000022448 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.90%
|
| C000022448 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022448 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| C000022448 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
94.80%
|
| C000022448 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000022447 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
42.50%
|
| C000022447 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
40.90%
|
| C000022447 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| C000022447 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000022447 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000022447 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.90%
|
| C000022447 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022447 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| C000022447 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
94.80%
|
| C000022447 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| C000022568 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022568 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| C000022568 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.20%
|
| C000022568 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.20%
|
| C000022568 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.50%
|
| C000022568 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.40%
|
| C000022568 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022568 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.60%
|
| C000022568 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.10%
|
| C000022568 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| C000022568 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022568 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.30%
|
| C000022568 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.70%
|
| C000022568 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.10%
|
| C000022568 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.40%
|
| C000022568 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| C000022568 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.30%
|
| C000022568 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022568 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.20%
|
| C000022568 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.10%
|
| C000022568 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
14.30%
|
| C000022568 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022569 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022569 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| C000022569 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.20%
|
| C000022569 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.20%
|
| C000022569 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.50%
|
| C000022569 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.40%
|
| C000022569 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022569 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.60%
|
| C000022569 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.10%
|
| C000022569 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| C000022569 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022569 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.30%
|
| C000022569 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.70%
|
| C000022569 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.10%
|
| C000022569 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.40%
|
| C000022569 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| C000022569 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.30%
|
| C000022569 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022569 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.20%
|
| C000022569 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.10%
|
| C000022569 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
14.30%
|
| C000022569 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022567 [Member] | Short term investments Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022567 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| C000022567 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.20%
|
| C000022567 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.20%
|
| C000022567 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.50%
|
| C000022567 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.40%
|
| C000022567 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.00%
|
| C000022567 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.60%
|
| C000022567 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.10%
|
| C000022567 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| C000022567 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| C000022567 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.30%
|
| C000022567 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.70%
|
| C000022567 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.10%
|
| C000022567 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.40%
|
| C000022567 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| C000022567 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.30%
|
| C000022567 [Member] | Short-Term Investments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022567 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.20%
|
| C000022567 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.10%
|
| C000022567 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
14.30%
|
| C000022567 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| C000022640 [Member] | Sixty One To 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022640 [Member] | Thirty One To 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.00%
|
| C000022640 [Member] | Over 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.50%
|
| C000022640 [Member] | Zero To 30 days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.10%
|
| C000022640 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022640 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
49.10%
|
| C000022640 [Member] | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
41.60%
|
| C000022642 [Member] | Sixty One To 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022642 [Member] | Thirty One To 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.00%
|
| C000022642 [Member] | Over 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.50%
|
| C000022642 [Member] | Zero To 30 days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.10%
|
| C000022642 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022642 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
49.10%
|
| C000022642 [Member] | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
41.60%
|
| C000022641 [Member] | Sixty One To 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| C000022641 [Member] | Thirty One To 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.00%
|
| C000022641 [Member] | Over 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.50%
|
| C000022641 [Member] | Zero To 30 days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.10%
|
| C000022641 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| C000022641 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
49.10%
|
| C000022641 [Member] | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
41.60%
|
| C000022740 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000022740 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| C000022740 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000022740 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.50%
|
| C000022740 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000022740 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.50%
|
| C000022740 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022740 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| C000022740 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022740 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| C000022740 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| C000022740 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022740 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.70%
|
| C000022740 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.10%
|
| C000022740 [Member] | Convertible bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000022740 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.60%
|
| C000022740 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| C000022740 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022740 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| C000022740 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| C000022740 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| C000022740 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
43.10%
|
| C000022740 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| C000022741 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000022741 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| C000022741 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000022741 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.50%
|
| C000022741 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000022741 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.50%
|
| C000022741 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022741 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| C000022741 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022741 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| C000022741 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| C000022741 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022741 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.70%
|
| C000022741 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.10%
|
| C000022741 [Member] | Convertible bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000022741 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.60%
|
| C000022741 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| C000022741 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022741 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| C000022741 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| C000022741 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| C000022741 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
43.10%
|
| C000022741 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| C000022739 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000022739 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| C000022739 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| C000022739 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.50%
|
| C000022739 [Member] | Standard & Poor's, B Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| C000022739 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.50%
|
| C000022739 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.70%
|
| C000022739 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| C000022739 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022739 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| C000022739 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| C000022739 [Member] | CCC and below [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000022739 [Member] | Preferred securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.70%
|
| C000022739 [Member] | Term loans [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.10%
|
| C000022739 [Member] | Convertible bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| C000022739 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.60%
|
| C000022739 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| C000022739 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| C000022739 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| C000022739 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| C000022739 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| C000022739 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
43.10%
|
| C000022739 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| C000073237 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.70%
|
| C000073237 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000073237 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.90%
|
| C000073237 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000073237 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000073237 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000073237 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.70%
|
| C000073237 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.90%
|
| C000073237 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000073237 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000073239 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.70%
|
| C000073239 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000073239 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.90%
|
| C000073239 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000073239 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000073239 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000073239 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.70%
|
| C000073239 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.90%
|
| C000073239 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000073239 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000073238 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.70%
|
| C000073238 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000073238 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.90%
|
| C000073238 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000073238 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000073238 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| C000073238 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
46.70%
|
| C000073238 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
50.90%
|
| C000073238 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000073238 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| C000078286 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| C000078286 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| C000078286 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000078286 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.50%
|
| C000078286 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000078286 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.20%
|
| C000078286 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.80%
|
| C000078286 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000078286 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000078286 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000078286 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000078286 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.80%
|
| C000078286 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000078286 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| C000078286 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| C000078286 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.80%
|
| C000078286 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.30%
|
| C000078286 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000078286 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000078287 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| C000078287 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| C000078287 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000078287 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.50%
|
| C000078287 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000078287 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.20%
|
| C000078287 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.80%
|
| C000078287 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000078287 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000078287 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000078287 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000078287 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.80%
|
| C000078287 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000078287 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| C000078287 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| C000078287 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.80%
|
| C000078287 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.30%
|
| C000078287 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000078287 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000078285 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| C000078285 [Member] | US Government Debt Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| C000078285 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| C000078285 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.50%
|
| C000078285 [Member] | Standard & Poor's, BB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000078285 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.20%
|
| C000078285 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.80%
|
| C000078285 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000078285 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000078285 [Member] | Not rated [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| C000078285 [Member] | Foreign government obligations [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000078285 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.80%
|
| C000078285 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| C000078285 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| C000078285 [Member] | US Government Debt Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| C000078285 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.80%
|
| C000078285 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.30%
|
| C000078285 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| C000078285 [Member] | Municipal Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| C000090651 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| C000090651 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000090651 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.50%
|
| C000090651 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| C000090651 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000090651 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000090651 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| C000090651 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000090651 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| C000090651 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000090651 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
55.30%
|
| C000090651 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| C000090650 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| C000090650 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000090650 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.50%
|
| C000090650 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| C000090650 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000090650 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000090650 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| C000090650 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000090650 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| C000090650 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000090650 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
55.30%
|
| C000090650 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| C000090649 [Member] | Moody's, Aaa Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| C000090649 [Member] | Standard & Poor's, AA Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| C000090649 [Member] | Standard & Poor's, A Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.50%
|
| C000090649 [Member] | Standard & Poor's, BBB Rating [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| C000090649 [Member] | US Government Corporations and Agencies Securities Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000090649 [Member] | Mortgage Backed Security Issued by US Government Sponsored Enterprise Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000090649 [Member] | Short term investments and other Quality [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| C000090649 [Member] | Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| C000090649 [Member] | Asset-Backed Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| C000090649 [Member] | US Government Corporations and Agencies Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| C000090649 [Member] | Corporate Bond Securities [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
55.30%
|
| C000090649 [Member] | Short term investments and other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|