Goodwill And Intangible Assets (Changes To Goodwill) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Balance at beginning of period	$ 1,403.7
Goodwill, Acquired During Period	8.7	$ 208.4
Goodwill, Foreign Currency Translation Gain (Loss)	(0.8)	(11.6)
Balance at end of period	1,411.6	1,403.7
Fluid Handling
Goodwill [Line Items]
Balance at beginning of period	240.8
Goodwill, Foreign Currency Translation Gain (Loss)	(0.6)	(4.6)
Balance at end of period	240.2	240.8
Payment & Merchandising Technologies
Goodwill [Line Items]
Balance at beginning of period	789.2
Goodwill, Foreign Currency Translation Gain (Loss)	(0.2)	(6.9)
Balance at end of period	797.7	789.2
Aerospace & Electronics
Goodwill [Line Items]
Balance at beginning of period	202.4
Goodwill, Acquired During Period	0.0	0.0
Goodwill, Foreign Currency Translation Gain (Loss)	0.0	0.0
Balance at end of period	202.4	202.4
Engineered Materials
Goodwill [Line Items]
Balance at beginning of period	171.3
Goodwill, Acquired During Period	0.0	0.0
Goodwill, Foreign Currency Translation Gain (Loss)	0.0	(0.1)
Balance at end of period	171.3	171.3
Westlock [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0.0	0.0
Microtronic [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		$ 208.4
Crane Currency [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 8.7