Summary of Significant Accounting Policies Goodwill (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Asset Acquisition, Consideration Transferred	$ 132.1
Payments to Acquire Productive Assets	125.0
Asset Acquisition, Consideration Transferred, Other Assets	7.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	5.2
Goodwill, Acquired During Period	5.0	$ 7.0
Goodwill	$ 159.2		$ 154.2