Acquisitions Crane Currency (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 10, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Business Combination, Integration Related Costs		$ 2.1	$ 0.5	$ 11.3	$ 3.1
Business Acquisition, Pro Forma Revenue		839.2		2,439.7
Payments to Acquire Businesses, Net of Cash Acquired				648.0	$ 54.8
working capital adjustment				24.3
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				348.1
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				27.6
Business Acquisition, Pro Forma Net Income (Loss)		$ 77.5		$ 203.8
Business Acquisition, Pro Forma Earnings Per Share, Basic		$ 1.30		$ 3.43
Business Acquisition, Pro Forma Earnings Per Share, Diluted		$ 1.28		$ 3.37
inventory step-up and backlog amortization		$ 0.3		$ 8.8
Goodwill, Acquired During Period				206.7		$ 31.5
Crane Currency [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 800.0
Payments to Acquire Businesses, Net of Cash Acquired	$ 672.3			648.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets		201.8		201.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		298.9		298.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		4.3		4.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		250.8		250.8
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		206.7		206.7
Business Combination, Separately Recognized Transactions, Assets Recognized		962.5		962.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		314.5		314.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		648.0		648.0
Goodwill, Acquired During Period				206.7
Intellectual Property Rights | Crane Currency [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		42.0		42.0
Customer Relationships [Member] | Crane Currency [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		134.3		$ 134.3
Finite-Lived Intangible Asset, Useful Life				23 years 3 months 18 days
Technology-Based Intangible Assets [Member] | Crane Currency [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		74.0		$ 74.0
Developed Technology Rights [Member] | Crane Currency [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life				8 years 4 months 24 days
Other Intangible Assets [Member] | Crane Currency [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		$ 0.5		$ 0.5
Order or Production Backlog [Member] | Crane Currency [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life				1 year