Restructuring (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Restructuring Reserves [Abstract]
Restructuring reserves included in accrued liabilities	$ 6.4		$ 6.5
Restructuring Programs 2014 to 2016 [Member]
Restructuring Program [Roll Forward]
Balance at beginning of period		$ 20.9
Charged to expense - termination benefits		1.9
Charged to expense - other		3.0
Payments		(17.3)
Other, net		1.0
Balance at end of period		$ 9.5
Restructuring Reserves [Abstract]
Restructuring reserves included in accrued liabilities	1.7		6.5
Restructuring reserves included in other liabilities	0.2		0.2
Restructuring Programs 2014 to 2016 [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date			48.0
Restructuring Programs 2014 to 2016 [Member] | Industrials [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date			38.5
Restructuring Programs 2014 to 2016 [Member] | Energy [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date			6.3
Restructuring Programs 2014 to 2016 [Member] | Medical [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date			$ 3.2
Restructuring Programs 2018 [Member]
Restructuring Program [Roll Forward]
Balance at beginning of period	0.0
Charged to expense - termination benefits	4.9
Charged to expense - other	0.5
Payments	(1.0)
Other, net	0.0
Balance at end of period	4.4
Restructuring Reserves [Abstract]
Restructuring reserves included in accrued liabilities	4.4
Restructuring Programs 2018 [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date	5.4
Restructuring Programs 2018 [Member] | Industrials [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date	3.7
Restructuring Programs 2018 [Member] | Energy [Member] | Other Operating Expense, Net [Member]
Restructuring Costs [Abstract]
Restructuring costs incurred to date	$ 1.7