Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets attributable to:
Accrued expenses	$ 55.0	$ 58.0
Non-deductible interest	43.8	29.2
Foreign tax credit carryforwards	29.3	29.3
Accrued pension and other post-retirement benefits	88.8	91.8
Stock-based compensation	34.4	28.9
Net operating loss carryforwards	44.7	48.7
Inventories	43.0	31.7
Norwegian correction tax		50.4
Research and development credit	4.7
Foreign exchange	4.1	40.2
Deferred tax assets	347.8	408.2
Valuation allowance	(58.3)	(38.9)
Deferred tax assets, net of valuation allowance	289.5	369.3
Deferred tax liabilities attributable to:
Revenue in excess of billings on contracts accounted for under the percentage of completion method	87.8	105.2
U.S. tax on foreign subsidiaries’ undistributed earnings not indefinitely reinvested	0.2	52.5
Property, plant and equipment, goodwill and other assets	116.4	142.8
Deferred tax liabilities	204.4	300.5
Net deferred tax assets (liabilities)	$ 85.1	$ 68.8