Average fixed interest rate related to the group of interest rate derivatives.

No definition available.

Name:	us-gaap_DerivativeAverageFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageRemainingMaturity1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Average variable interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageVariableInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PositionAxis=us-gaap_ShortMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	two_DerivativeByMaturityAxis=two_DerivativeMaturityWithinOneYearFromBalanceSheetDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	two_DerivativeByMaturityAxis=two_DerivativeMaturityOverOneAndWithinTwoYearsFromBalanceSheetDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	two_DerivativeByMaturityAxis=two_DerivativeMaturityOverTwoAndWithinThreeYearsFromBalanceSheetDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	two_DerivativeByMaturityAxis=two_DerivativeMaturityOverThreeAndWithinFourYearsFromBalanceSheetDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	two_DerivativeByMaturityAxis=two_DerivativeMaturityOverFourYearsFromBalanceSheetDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=two_ForwardStartingInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Derivative Instruments and Hedging Activities Schedule of Interest Rate Swap Receivers (Details) - USD ($)		6 Months Ended
	Dec. 31, 2021	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional	$ 17,159,801,000	$ 2,978,027,000	$ 18,878,215,000	$ 23,094,926,000	$ 19,137,094,000	$ 23,932,603,000
Interest Rate Swap [Member] \| Short [Member]
Derivative [Line Items]
Notional	$ 7,229,731,000	$ 6,812,725,000
Weighted Average Variable Interest Rate	0.062%	1.523%
Weighted Average Fixed Interest Rate	0.763%	1.54%
Weighted Average Remaining Maturity	7 years 3 months 14 days	8 years 8 months 12 days
Interest Rate Swap [Member] \| Derivative Maturity Within One Year From Balance Sheet Date [Member] \| Short [Member]
Derivative [Line Items]
Notional	$ 2,221,658,000	$ 0
Weighted Average Variable Interest Rate	0.07%	0.00%
Weighted Average Fixed Interest Rate	0.118%	0.00%
Weighted Average Remaining Maturity	1 year 2 months 8 days	0 years
Interest Rate Swap [Member] \| Derivative Maturity Over One And Within Two Years From Balance Sheet Date [Member] \| Short [Member]
Derivative [Line Items]
Notional	$ 0	$ 0
Weighted Average Variable Interest Rate	0.00%	0.00%
Weighted Average Fixed Interest Rate	0.00%	0.00%
Weighted Average Remaining Maturity	0 years	0 years
Interest Rate Swap [Member] \| Derivative Maturity Over Two And Within Three Years From Balance Sheet Date [Member] \| Short [Member]
Derivative [Line Items]
Notional	$ 0	$ 0
Weighted Average Variable Interest Rate	0.00%	0.00%
Weighted Average Fixed Interest Rate	0.00%	0.00%
Weighted Average Remaining Maturity	0 years	0 years
Interest Rate Swap [Member] \| Derivative Maturity Over Three And Within Four Years From Balance Sheet Date [Member] \| Short [Member]
Derivative [Line Items]
Notional	$ 0	$ 1,626,290,000
Weighted Average Variable Interest Rate	0.00%	1.50%
Weighted Average Fixed Interest Rate	0.00%	0.982%
Weighted Average Remaining Maturity	0 years	4 years 4 months 20 days
Interest Rate Swap [Member] \| Derivative Maturity Over Four Years From Balance Sheet Date [Member] \| Short [Member]
Derivative [Line Items]
Notional	$ 5,008,073,000	$ 5,186,435,000
Weighted Average Variable Interest Rate	0.058%	1.526%
Weighted Average Fixed Interest Rate	1.049%	1.619%
Weighted Average Remaining Maturity	10 years	9 years 3 months 21 days
Forward Starting Interest Rate Swap
Derivative [Line Items]
Notional		$ 900,000,000
Weighted Average Fixed Interest Rate		2.70%