Two Harbors Investment Corp. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities Schedule of Interest Rate Swap Payers (Details)

Derivative Instruments and Hedging Activities Schedule of Interest Rate Swap Payers (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Notional	$ 23,932,603,000	$ 48,445,497,000	$ 36,528,169,000
Interest Rate Swap [Member] \| Long [Member]
Derivative [Line Items]
Notional	$ 11,194,818,000	$ 30,913,709,000
Weighted Average Fixed Interest Rate	0.067%	1.878%
Weighted Average Variable Interest Rate	0.09%	1.921%
Weighted Average Remaining Maturity	2 years 5 months 19 days	3 years 1 month 20 days
Interest Rate Swap [Member] \| Derivative Maturity Within One Year From Balance Sheet Date [Member] \| Long [Member]
Derivative [Line Items]
Notional	$ 0	$ 3,640,000,000
Weighted Average Fixed Interest Rate	0.00%	1.806%
Weighted Average Variable Interest Rate	0.00%	1.937%
Weighted Average Remaining Maturity	0 years	9 months 29 days
Interest Rate Swap [Member] \| Derivative Maturity Over One And Within Two Years From Balance Sheet Date [Member] \| Long [Member]
Derivative [Line Items]
Notional	$ 7,415,818,000	$ 15,740,977,000
Weighted Average Fixed Interest Rate	0.042%	1.681%
Weighted Average Variable Interest Rate	0.09%	1.91%
Weighted Average Remaining Maturity	1 year 7 months 28 days	1 year 5 months 19 days
Interest Rate Swap [Member] \| Derivative Maturity Over Two And Within Three Years From Balance Sheet Date [Member] \| Long [Member]
Derivative [Line Items]
Notional	$ 2,281,500,000	$ 2,578,640,000
Weighted Average Fixed Interest Rate	0.023%	1.911%
Weighted Average Variable Interest Rate	0.09%	1.901%
Weighted Average Remaining Maturity	2 years 5 months 23 days	2 years 8 months 26 days
Interest Rate Swap [Member] \| Derivative Maturity Over Three And Within Four Years From Balance Sheet Date [Member] \| Long [Member]
Derivative [Line Items]
Notional	$ 0	$ 215,000,000
Weighted Average Fixed Interest Rate	0.00%	3.057%
Weighted Average Variable Interest Rate	0.00%	1.91%
Weighted Average Remaining Maturity	0 years	3 years 10 months 24 days
Interest Rate Swap [Member] \| Derivative Maturity Over Four Years From Balance Sheet Date [Member] \| Long [Member]
Derivative [Line Items]
Notional	$ 1,497,500,000	$ 8,739,092,000
Weighted Average Fixed Interest Rate	0.257%	2.224%
Weighted Average Variable Interest Rate	0.09%	1.935%
Weighted Average Remaining Maturity	6 years 5 months 26 days	7 years 2 months 12 days