CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Current Assets
Cash	$ 205,309	$ 209,614
Accounts Receivable	44,000	44,000
Total Current Assets	249,309	253,614
Total Assets	249,309	253,614
Current Liabilities
Accounts Payable and Accrued Expenses	4,250	1,400
Accrued Board of Director/Officer Compensation	149,000	77,000
Total Current Liabilities	153,250	78,400
Total Liabilities	153,250	78,400
Stockholders' Equity
Common Stock - $0.001 Par; 850,000,000 Shares Authorized, 238,136,969 Issued and Outstanding	238,136	238,136
Additional Paid-In-Capital	1,043,809	1,043,809
Accumulated Deficit	(1,185,886)	(1,106,731)
Total Stockholders' Equity	96,059	175,214
Total Liabilities and Stockholders' Equity	$ 249,309	$ 253,614

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.