S000047461 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

133 Months Ended

Dec. 31, 2025

Dec. 31, 2025

Dec. 31, 2025

Dec. 31, 2025

Bloomberg U.S. Long Government/Credit Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

6.62%

(4.89%)

1.98%

1.52%

Performance Inception Date

Dec. 15, 2014

Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

7.30%

(0.36%)

2.01%

1.87%

Performance Inception Date

Dec. 15, 2014

Prospectus [Line Items]

Average Annual Return, Percent

6.16%

(6.70%)

(0.44%)

(0.30%)

Performance Inception Date

Dec. 15, 2014

Prospectus [Line Items]

Average Annual Return, Percent

6.26%

(6.45%)

(0.18%)

(0.04%)

Performance Inception Date

Dec. 15, 2014

Class I | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

4.07%

(7.90%)

(1.85%)

(1.67%)

Performance Inception Date

Dec. 15, 2014

Class I | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

3.68%

(5.28%)

(0.67%)

(0.57%)

Performance Inception Date

Dec. 15, 2014

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

6.17%

(6.52%)

(0.26%)

(0.12%)

Performance Inception Date

^[1]

Dec. 15, 2014

[1]

Class I2 shares of the Fund were not available for purchase until November 3, 2025. Performance shown prior to that inception date is that of Class I shares (which invest in the same portfolio of securities as Class I2 shares), reduced by an estimate of the additional operating expenses that would have applied to Class I2 shares prior to November 3, 2025. The actual additional expenses incurred had Class I2 shares begun operations earlier may have been greater or less than that estimate.