S000012738 [Member] Average Annual Total Returns	12 Months Ended	60 Months Ended	120 Months Ended
S000012738 [Member] Average Annual Total Returns	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024
Bloomberg U.S. Aggregate Index (reflects no deduction for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	1.25%	(0.33%)	1.35%
ICE BofA 3-Month U.S. Treasury Bill Index (reflects no deduction for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	5.25%	2.46%	1.77%
Class R
Prospectus [Line Items]
Average Annual Return, Percent	2.16%	(0.93%)	1.13%
Class I
Prospectus [Line Items]
Average Annual Return, Percent	2.77%	(0.38%)	1.70%
Class I \| After Taxes on Distributions
Prospectus [Line Items]
Average Annual Return, Percent	0.82%	(1.40%)	0.49%
Class I \| After Taxes on Distributions and Sales
Prospectus [Line Items]
Average Annual Return, Percent	1.63%	(0.70%)	0.79%
Class IS
Prospectus [Line Items]
Average Annual Return, Percent	2.90%	(0.26%)	1.81%
Class A
Prospectus [Line Items]
Average Annual Return, Percent	(1.29%)	(1.54%)	0.94%
Class C
Prospectus [Line Items]
Average Annual Return, Percent	0.72%	(1.39%)	0.68%
Class FI
Prospectus [Line Items]
Average Annual Return, Percent	2.55%	(0.68%)	1.39%