CONDENSED BALANCE SHEETS - UNAUDITED - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current Assets
Cash	$ 1,700	$ 1,700
Prepaid expenses		100
Total Current Assets	1,700	1,800
Total Assets	1,700	1,800
Current liabilities
Accounts Payable and Accrued Expenses	6,100	14,000
Accrued Board of Director Compensation	1,000	90,000
Total Current Liabilities	7,100	104,000
Total Liabilities	7,100	104,000
Stockholders' Deficit
Common Stock - $0.001 Par; 850,000,000 Shares Authorized, 87,360,547 and 47,227,500 Issued and Outstanding, Respectively	87,360	47,227
Additional Paid-In-Capital	95,667	(41,927)
Accumulated Deficit	(188,427)	(107,500)
Total Stockholders' Deficit	(5,400)	(102,200)
Total Liabilities and Stockholders' Deficit	$ 1,700	$ 1,800

Accrued Board Of Director Compensation.

No definition available.

Name:	grhi_AccruedBoardOfDirectorCompensation
Namespace Prefix:	grhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.