Cover - shares	6 Months Ended
	Sep. 30, 2022	Oct. 24, 2022
Cover [Abstract]
Entity Registrant Name	PETROGAS COMPANY
Entity Central Index Key	0001609258
Document Type	10-Q
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	true
Entity Current Reporting Status	Yes
Document Period End Date	Sep. 30, 2022
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2022
Entity Ex Transition Period	false
Entity Common Stock Shares Outstanding		21,048,440
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	333-196409
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	98-1153516
Entity Address Address Line 1	2800 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	832
Local Phone Number	899-8597
Entity Interactive Data Current	Yes