Cover - USD ($)	12 Months Ended
	Mar. 31, 2025	Jun. 10, 2025	Sep. 30, 2024
Cover [Abstract]
Entity Registrant Name	PETROGAS COMPANY
Entity Central Index Key	0001609258
Document Type	10-K
Amendment Flag	false
Entity Voluntary Filers	No
Current Fiscal Year End Date	--03-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	true
Entity Current Reporting Status	Yes
Document Period End Date	Mar. 31, 2025
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Entity Ex Transition Period	false
Entity Common Stock Shares Outstanding		22,996,680
Entity Public Float			$ 126,819
Document Annual Report	true
Document Transition Report	false
Document Fin Stmt Error Correction Flag	false
Entity File Number	333-196409
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	98-1153516
Entity Address Address Line 1	200 Post Oak Boulevard
Entity Address Address Line 2	Suite 4100
Entity Address City Or Town	Houston
Entity Address State Or Province	TX
Entity Address Postal Zip Code	77056
City Area Code	806
Local Phone Number	375-3338
Entity Interactive Data Current	Yes
Auditor Firm Id	6993
Auditor Name	Boladale Lawal & CO
Auditor Location	Lagos, Nigeria