Stockholders' Equity - Dividend Limitations (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Stockholders' Equity
Dividend limitation as percentage of statutory policyholder surplus (as a percent)	10.00%
Dividends that can be paid in upcoming calendar year without exceeding statutory limitation	$ 430.1

Represents the limitation on stockholder dividends as a percentage of the entity's statutory policyholder surplus as of the preceding year-end.

No definition available.

Name:	plic_DividendRestrictionPercentageOfPolicyholdersSurplus
Namespace Prefix:	plic_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration