Subsequent Event (Details) - Subsequent Event [Member] $ in Millions	1 Months Ended
Jul. 31, 2020 USD ($)
Subsequent Event [Line Items]
Premium returns for eligible policyholders, amount, July	$ 22
Reduced premiums earned and written, amount, July	22
Premium returns for eligible policyholders, amount, total	$ 128

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration