Discontinued Operations - Schedule of Amounts Included in Discontinued Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Earnings from discontinued operations, net of tax	$ 49,000,000.0	$ 78,700,000	$ 170,300,000	$ 226,600,000
Gain on disposition of discontinued operations, net of tax	1,100,000	0	1,707,700,000	0
Net earnings from discontinued operations	50,100,000	78,700,000	1,878,000,000	226,600,000
Held-for-sale or Disposed of by Sale | TransCore Holdings Inc, Zetec and Civco Radiotherapy
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues	0	158,600,000	100,400,000	472,100,000
Cost of sales	0	91,300,000	71,200,000	280,200,000
Gross profit	0	67,300,000	29,200,000	191,900,000
Selling, general and administrative expenses	0	25,600,000	19,900,000	87,800,000
Income from operations	0	41,700,000	9,300,000	104,100,000
Other income (expense), net	0	200,000	100,000	1,400,000
Earnings before income taxes	0	41,900,000	9,400,000	105,500,000
Income taxes	0	12,200,000	(6,200,000)	23,400,000
Earnings from discontinued operations, net of tax	0	29,700,000	15,600,000	82,100,000
Gain on disposition of discontinued operations, net of tax	1,100,000	0	1,707,700,000	0
Net earnings from discontinued operations	1,100,000	29,700,000	1,723,300,000	82,100,000
Stock-based compensation expense			4,500,000
Depreciation and amortization	0	1,700,000		5,200,000
Held-for-sale or Disposed of by Sale | TransCore Holdings Inc, Zetec and Civco Radiotherapy | Selling, General and Administrative Expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Stock-based compensation expense		1,400,000	900,000	3,200,000
Held-for-sale or Disposed of by Sale | Industrial Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues	269,000,000.0	230,700,000	770,900,000	688,300,000
Cost of sales	126,300,000	106,300,000	361,600,000	316,100,000
Gross profit	142,700,000	124,400,000	409,300,000	372,200,000
Selling, general and administrative expenses	78,900,000	67,800,000	213,400,000	193,300,000
Income from operations	63,800,000	56,600,000	195,900,000	178,900,000
Other income (expense), net	2,500,000	400,000	3,600,000	(100,000)
Earnings before income taxes	66,300,000	57,000,000.0	199,500,000	178,800,000
Income taxes	17,300,000	8,000,000.0	44,800,000	34,300,000
Earnings from discontinued operations, net of tax	49,000,000.0	49,000,000.0	154,700,000	144,500,000
Stock-based compensation expense	$ 2,600,000	3,400,000	8,100,000	9,400,000
Depreciation and amortization		$ 4,400,000	$ 6,400,000	$ 14,200,000