Merchant financing, net of discounts.

No definition available.

Name:	RETC_MerchantFinancingCurrent
Namespace Prefix:	RETC_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Merchant financing payables.

+ References

No definition available.

+ Details

Name:	RETC_MerchantFinancingPayables
Namespace Prefix:	RETC_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Merchant financing unamortized discounts.

+ References

No definition available.

+ Details

Name:	RETC_MerchantFinancingUnamortizedDiscounts
Namespace Prefix:	RETC_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Repayment on holders per week.

+ References

No definition available.

+ Details

Name:	RETC_RepaymentOnHoldersPerWeek
Namespace Prefix:	RETC_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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:	dei_EntityListingsLineItems
Namespace Prefix:	dei_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

+ Details

Name:	us-gaap_DebtInstrumentFeeAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(3))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

+ Details

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

- Definition

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromRelatedPartyDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=RETC_PayrollProtectionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=RETC_TwentyTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=RETC_TwentyTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=RETC_VoxFundingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=RETC_FirstFutureReceivablePurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=RETC_SecondFutureReceivablePurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=RETC_VerbalAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=RETC_ReliantFundingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=RETC_ThirdFutureReceivablePurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=RETC_RuneNYCLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=RETC_FutureReceivablePurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=RETC_SmallBusinessAdministrationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

MERCHANT FINANCING (Details Narrative) - USD ($)						1 Months Ended	13 Months Ended
MERCHANT FINANCING (Details Narrative) - USD ($)	Mar. 27, 2020	Mar. 05, 2020	Mar. 03, 2020	Jan. 24, 2020	Jan. 04, 2020	Aug. 31, 2020	May 22, 2021	Jun. 30, 2021	May 31, 2021	Apr. 30, 2021	Dec. 31, 2020
Entity Listings [Line Items]
Merchant financing payables								$ 411,122			$ 412,647
Merchant financing unamortized discounts								2,754			2,754
Merchant financing net								$ 408,368			$ 408,892
Payroll Protection Loans [Member]
Entity Listings [Line Items]
Debt payment terms	The remaining portion needs to be repaid over 2 years with a 6-month moratorium on payments and carry a
Debt interest rate	1.00%
Payroll Protection Loans [Member] \| 2020 [Member]
Entity Listings [Line Items]
Proceeds from related party debt							$ 294,882
Payroll Protection Loans [Member] \| 2021 [Member]
Entity Listings [Line Items]
Proceeds from related party debt							$ 302,602
Vox Funding [Member] \| First Future Receivable Purchase Agreement [Member]
Entity Listings [Line Items]
Proceeds from related party debt				$ 14,500
Debt payment terms				payment over 3.5 months
Debt fee amount				$ 4,850
Vox Funding [Member] \| Second Future Receivable Purchase Agreement [Member]
Entity Listings [Line Items]
Proceeds from related party debt			$ 5,605
Debt payment terms			payment over 2 months
Debt fee amount			$ 1,895
Vox Funding [Member] \| Verbal Agreement [Member]
Entity Listings [Line Items]
Repayment on holders per week									$ 250
Reliant Funding [Member] \| Third Future Receivable Purchase Agreement [Member]
Entity Listings [Line Items]
Proceeds from related party debt		$ 83,000
Debt payment terms		payment over 6 months
Debt fee amount		$ 3,000
Reliant Funding [Member] \| Verbal Agreement [Member]
Entity Listings [Line Items]
Repayment on holders per week										$ 10
Rune NYC, LLC [Member] \| Vox Funding [Member] \| Future Receivable Purchase Agreement [Member]
Entity Listings [Line Items]
Proceeds from related party debt					$ 14,500
Debt payment terms					payment over 70 business days
Debt fee amount					$ 4,850
Small Business Administration [Member]
Entity Listings [Line Items]
Proceeds from related party debt						$ 325,300
Debt interest rate						3.75%