Acquisitions and Discontinued Operations - Wind-Down of DBT - Assets and Liabilities of Discontinued Operations (Details) - Discontinued operations, disposed of by sale - DBT - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and equivalents	$ 7.8	$ 4.3
Accounts receivable, net	9.1	10.1
Other current assets	7.0	7.5
Property, plant and equipment:
Property, plant and equipment, gross	1.7	13.0
Accumulated depreciation	(1.5)	(9.8)
Property, plant and equipment, net	0.2	3.2
Other assets	27.6	17.9
Total assets - discontinued operations	51.7	43.0
LIABILITIES
Accounts payable	2.3	2.3
Contract liabilities	5.6	7.5
Accrued expenses	22.4	2.5
Other long-term liabilities	4.9	5.3
Total liabilities - discontinued operations	35.2	17.6
Buildings and leasehold improvements
Property, plant and equipment:
Property, plant and equipment, gross	0.2	5.7
Machinery and equipment
Property, plant and equipment:
Property, plant and equipment, gross	$ 1.5	$ 7.3