Goodwill And Intangible Assets (Changes To Goodwill) (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Goodwill [Line Items]
Balance at beginning of period	$ 1,206.9	$ 1,149.2
Goodwill, Acquired During Period	231.0	31.5
Goodwill, Foreign Currency Translation Gain (Loss)	(5.4)	26.2
Balance at end of period	1,432.5	1,206.9
Fluid Handling [Member]
Goodwill [Line Items]
Balance at beginning of period	245.4	212.3
Goodwill, Foreign Currency Translation Gain (Loss)	(2.4)	10.5
Balance at end of period	243.0	245.4
Payment and Merchandising Technologies [Member]
Goodwill [Line Items]
Balance at beginning of period	587.7	563.3
Goodwill, Foreign Currency Translation Gain (Loss)	(2.9)	15.5
Balance at end of period	815.8	587.7
Aerospace and Electronics [Member]
Goodwill [Line Items]
Balance at beginning of period	202.4	202.3
Goodwill, Acquired During Period	0.0	0.0
Goodwill, Foreign Currency Translation Gain (Loss)	0.0	0.1
Balance at end of period	202.4	202.4
Engineered Materials
Goodwill [Line Items]
Balance at beginning of period	171.4	171.3
Goodwill, Acquired During Period	0.0	0.0
Goodwill, Foreign Currency Translation Gain (Loss)	(0.1)	0.1
Balance at end of period	171.3	171.4
Westlock [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0.0	22.6
Microtronic [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		$ 8.9
Crane Currency [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 231.0