Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets attributable to
Accrued expenses	$ 128.0	$ 155.2
Capital Loss	21.2
Non-deductible interest	89.3	85.9
Foreign tax credit carryforwards	105.9	34.9
Net operating loss carryforwards	382.8	390.7
Inventories	3.2	13.4
Research and development credit	6.5	7.5
Foreign exchange	32.5
Provisions for pensions and other long-term employee benefits	72.4	86.4
Contingencies related to contracts	83.7	111.3
Other contingencies	28.7	33.5
Fair value losses/gains		12.4
Margin recognition on construction contracts	34.4
Other	15.2	11.1
Deferred tax assets	1,003.8	942.3
Valuation allowance	(683.4)	(430.0)
Deferred tax assets, net of valuation allowance	320.4	512.3
Deferred tax liabilities attributable to
Revenue in excess of billings on contracts accounted for under the percentage of completion method	9.2	41.2
U.S. tax on foreign subsidiaries’ undistributed earnings not indefinitely reinvested	9.4	4.9
Foreign exchange		21.5
Property, plant and equipment, intangibles and other assets	278.6	403.3
Margin recognition on construction contracts		6.4
Deferred tax liabilities	297.2	477.3
Net deferred tax assets/(liabilities)	$ 23.2	$ 35.0