Do parent accounts have detail type in addition to account type

Hi there, @ronmitori. 

Thank you for reaching to the Community. 

Yes, you can't create an account without any detail type. The detail type is the account you created to track with each account. Also, you can run a detailed reports to understand the details transactions, income, and expenses. 

I also got an article for you that will help you more about Create subaccounts in your chart of accounts in QuickBooks Online. 

Please get back to me if you need anything else about this. I'm here to lend a hand. Have a great day!