STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2020		$ 31.0	$ 14.5	$ 147.9	$ 1,668.7	$ (25.3)
Investments from PACCAR				8.1
Net Income (Loss)	$ 148.1				148.1
Dividends paid					(100.0)
Net unrealized (loss) gain						23.4
Ending balance at Dec. 31, 2021	1,916.4	31.0	14.5	156.0	1,716.8	(1.9)
Investments from PACCAR				8.6
Net Income (Loss)	196.8				196.8
Dividends paid					(100.0)
Net unrealized (loss) gain						20.3
Ending balance at Dec. 31, 2022	2,042.1	31.0	14.5	164.6	1,813.6	18.4
Investments from PACCAR				7.0
Net Income (Loss)	139.5				139.5
Dividends paid					(250.0)
Net unrealized (loss) gain						(7.4)
Ending balance at Dec. 31, 2023	$ 1,931.2	$ 31.0	$ 14.5	$ 171.6	$ 1,703.1	$ 11.0