Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of period		$ 28.8	$ 17.0	$ 13.6
Charges to cost and expense		7.9	17.0	10.6
(Deductions)		(3.6)	(5.2)	(7.2)
Balance at end of period		33.1	28.8	17.0
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of period		15.7	11.3	7.7
Charges to cost and expense	[1]	1.8	6.1	6.9
(Deductions)	[2]	(3.6)	(1.7)	(3.3)
Balance at end of period		13.9	15.7	11.3
Costs and Earnings in Excess of Billings Allowance [Member]
Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of period		10.4	1.7	0.9
Charges to cost and expense	[1]	2.1	8.7	0.9
(Deductions)	[2]	0.0	0.0	(0.1)
Balance at end of period		12.5	10.4	1.7
Inventory Valuation Reserve [Member]
Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of period		2.6	2.0	2.2
Charges to cost and expense	[3]	3.8	2.0	2.3
(Deductions)	[4]	0.0	(1.4)	(2.5)
Balance at end of period		6.4	2.6	2.0
Valuation Allowance for Deferred Tax Assets [Member]
Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of period		0.1	2.0	2.8
Charges to cost and expense	[5]	0.2	0.2	0.5
(Deductions)	[6]	0.0	(2.1)	(1.3)
Balance at end of period		$ 0.3	$ 0.1	$ 2.0

[1] Provisions for doubtful accounts and costs and earnings in excess of billings.

[2] Write-offs and reversals of uncollectible accounts receivable and non-billable costs and earnings in excess of billings.

[3] Provision for inventory obsolescence.

[4] Inventory write-offs.

[5] Increase in the foreign tax loss carryforwards.

[6] Utilization of tax loss carryforwards and other tax benefits.