Organization (Details)	Nov. 01, 2018 USD ($)	Oct. 31, 2018 item
Number of classes of common stock	1	2
New PFSI | Common Stock
Common stock conversion ratio (as a percent)	100.00%
New PFSI | Class B Common Stock
Consideration received from conversion of stock	$ 0
New PFSI | Class A Unit
Common stock conversion ratio (as a percent)	100.00%