Goodwill And Intangible Assets (Summary Of Intangible Assets) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period of Finite Lived Assets (in years)	17 years 9 months 18 days
Gross Asset	$ 885.3	$ 892.2
Accumulated Amortization	433.2	426.3
Intangible assets, net	$ 452.1	465.9	$ 519.1
Intellectual property rights
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period of Finite Lived Assets (in years)	15 years 2 months 12 days
Gross Asset	$ 131.4	131.9
Accumulated Amortization	54.4	54.3
Intangible assets, net	$ 77.0	77.6
Customer relationships and backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period of Finite Lived Assets (in years)	18 years 3 months 18 days
Gross Asset	$ 606.4	611.8
Accumulated Amortization	275.1	270.1
Intangible assets, net	$ 331.3	341.8
Drawings
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period of Finite Lived Assets (in years)	40 years
Gross Asset	$ 11.1	11.1
Accumulated Amortization	10.6	10.6
Intangible assets, net	$ 0.5	0.5
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period of Finite Lived Assets (in years)	11 years 9 months 18 days
Gross Asset	$ 136.4	137.4
Accumulated Amortization	93.1	91.3
Intangible assets, net	$ 43.3	$ 46.0