Discontinued Operations - Schedule of Assets and Liabilities From Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Current assets held for sale	$ 1,111.3		$ 1,111.3		$ 1,078.0
Assets held for sale	0.0		0.0		804.9
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Current liabilities held for sale	232.4		232.4		340.1
Held-for-sale or Disposed of by Sale | TransCore Holdings Inc, Zetec and Civco Radiotherapy
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Accounts receivable, net					74.7
Inventories, net					47.8
Unbilled receivables					158.2
Goodwill					405.5
Other intangible assets, net					31.0
Other current assets					71.4
Current assets held for sale					788.6
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Accounts payable					40.3
Accrued compensation					27.0
Deferred taxes					29.5
Other current liabilities					62.3
Current liabilities held for sale					159.1
Stock-based compensation expense			4.5
Held-for-sale or Disposed of by Sale | TransCore Holdings Inc, Zetec and Civco Radiotherapy | Selling, General and Administrative Expenses
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Stock-based compensation expense		$ 0.5	0.9	$ 1.8
Held-for-sale or Disposed of by Sale | Industrial Businesses
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Accounts receivable, net	161.1		161.1		151.8
Inventories, net	133.1		133.1		106.9
Deferred taxes	48.5		48.5		0.0
Goodwill	597.0		597.0		0.0
Other intangible assets, net	72.8		72.8		0.0
Other current assets	98.8		98.8		30.7
Current assets held for sale	1,111.3		1,111.3		289.4
Goodwill	0.0		0.0		618.2
Other intangible assets, net	0.0		0.0		79.4
Deferred taxes	0.0		0.0		51.1
Other assets	0.0		0.0		56.2
Assets held for sale	0.0		0.0		804.9
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Accounts payable	64.4		64.4		52.5
Accrued compensation	34.7		34.7		47.9
Deferred revenue	24.5		24.5		23.9
Deferred taxes	20.1		20.1		0.0
Income taxes payable	13.4		13.4		14.7
Operating lease liabilities	23.0		23.0		0.0
Other current liabilities	52.3		52.3		42.0
Current liabilities held for sale	232.4		232.4		181.0
Deferred taxes	0.0		0.0		13.3
Operating lease liabilities	0.0		0.0		24.1
Other liabilities	0.0		0.0		12.0
Liabilities held for sale	0.0		0.0		$ 49.4
Stock-based compensation expense	$ 2.6	$ 3.4	$ 5.5	$ 6.0