Nature of Operations - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 31, 2022	Jun. 13, 2022	Dec. 31, 2021	Sep. 30, 2021	Sep. 30, 2020
Assets Acquired:
Goodwill	$ 1,042.0		$ 1,049.0	$ 1,052.0	$ 1,009.5
Maxi-Metal
Assets Acquired:
Current assets, excluding cash of $1.7		$ 7.5
Property, plant and equipment		1.6
Goodwill	$ 7.4	7.4
Purchased intangible assets		7.2
Total assets		23.7
Liabilities Assumed:
Current liabilities		2.0
Long-term liabilities		2.0
Total liabilities		4.0
Net assets acquired		$ 19.7