S000024274 [Member] Average Annual Total Returns	12 Months Ended	60 Months Ended	120 Months Ended
S000024274 [Member] Average Annual Total Returns	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2025
Bloomberg U.S. Aggregate Index (no deduction for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	7.30%	(0.36%)	2.01%
ICE BofA 1-3 Year U.S. Corporate Index (no deduction for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	5.89%	2.49%	2.79%
Putnam Short Duration Bond Linked Benchmark (no deduction for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	5.89%	2.49%	2.53%
Class Y
Prospectus [Line Items]
Average Annual Return, Percent	5.96%	2.83%	3.05%
Class A
Prospectus [Line Items]
Average Annual Return, Percent	3.22%	2.09%	2.56%
Class A \| After Taxes on Distributions
Prospectus [Line Items]
Average Annual Return, Percent	1.57%	0.84%	1.46%
Class A \| After Taxes on Distributions and Sales
Prospectus [Line Items]
Average Annual Return, Percent	1.89%	1.05%	1.47%
Class C
Prospectus [Line Items]
Average Annual Return, Percent	3.82%	1.79%	2.19%
Class R
Prospectus [Line Items]
Average Annual Return, Percent	5.30%	2.30%	2.53%
Class R6
Prospectus [Line Items]
Average Annual Return, Percent	5.84%	2.81%	3.05%