Shareholder Report, Average Annual Return (Details)		12 Months Ended	60 Months Ended	120 Months Ended
		Oct. 31, 2024	Oct. 31, 2024	Oct. 31, 2024
Class A
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class A (with sales charge)
Average Annual Return, Percent		6.89%	0.03%	1.34%
Class C
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class C (with sales charge)
Average Annual Return, Percent		9.44%	0.11%	1.15%
Class R
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class R
Average Annual Return, Percent		10.97%	0.60%	1.50%
Class R6
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class R6
Average Annual Return, Percent		11.50%	1.10%	2.00%
Class Y
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class Y
Average Annual Return, Percent		11.68%	1.13%	2.02%
Without Sales Load [Member] | Class A
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class A
Average Annual Return, Percent		11.35%	0.85%	1.76%
Without Sales Load [Member] | Class C
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class C
Average Annual Return, Percent		10.44%	0.11%	1.15%
Bloomberg U.S. Aggregate Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Bloomberg U.S. Aggregate Index
Average Annual Return, Percent		10.55%	(0.23%)	1.49%
Bloomberg U.S. Aggregate Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Bloomberg U.S. Aggregate Index
Average Annual Return, Percent		10.55%	(0.23%)	1.49%
Bloomberg U.S. Aggregate Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Bloomberg U.S. Aggregate Index
Average Annual Return, Percent		10.55%	(0.23%)	1.49%
Bloomberg U.S. Aggregate Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Bloomberg U.S. Aggregate Index
Average Annual Return, Percent		10.55%	(0.23%)	1.49%
Bloomberg U.S. Aggregate Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Bloomberg U.S. Aggregate Index
Average Annual Return, Percent		10.55%	(0.23%)	1.49%
Putnam Core Bond Linked Benchmark [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Putnam Core Bond Linked Benchmark
Average Annual Return, Percent	[1]	10.55%	2.00%	1.52%
Putnam Core Bond Linked Benchmark [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Putnam Core Bond Linked Benchmark
Average Annual Return, Percent	[2]	10.55%	2.00%	1.52%
Putnam Core Bond Linked Benchmark [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Putnam Core Bond Linked Benchmark
Average Annual Return, Percent	[3]	10.55%	2.00%	1.52%
Putnam Core Bond Linked Benchmark [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Putnam Core Bond Linked Benchmark
Average Annual Return, Percent	[4]	10.55%	2.00%	1.52%
Putnam Core Bond Linked Benchmark [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Putnam Core Bond Linked Benchmark
Average Annual Return, Percent	[5]	10.55%	2.00%	1.52%

[1] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter.

[2] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter.

[3] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter.

[4] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter.

[5] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter.