Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 17, 2017	Jan. 16, 2017
Income Tax [Line Items]
Foreign tax credit carryforwards	$ 34,900,000	$ 34,900,000	$ 0
Foreign tax credit carryforwards, expiration date		Dec. 31, 2024
Foreign earnings taxable as dividend		$ 1,400,000,000	0	$ 0
Net operating loss carryforwards, expiration date		Dec. 31, 2018
Unrecognized tax benefits that would impact effective tax rate	96,300,000	$ 96,300,000	$ 16,600,000	$ 0
Unrecognized tax benefits, increase from purchase accounting		$ 50,200,000
Statutory income tax rate		19.30%	34.40%	38.00%
Deferred tax liabilities	477,300,000	$ 477,300,000	$ 105,200,000
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings, provisional income tax expense	32,100,000	148,700,000
Effective income tax rate reconciliation, repatriation of foreign earnings, amount		2,900,000,000
Tax Cuts and Jobs Act of 2017, deferred tax assets, tax credit carryforwards, foreign	34,900,000	34,900,000			$ 77,700,000
Tax Cuts and Job Acts of 2017, deferred tax assets, valuation allowance	34,900,000	34,900,000			77,700,000
Tax Cuts and Jobs Act of 2017, deferred tax assets, net of valuation allowance	0	0			$ 0
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings, provisional liability	32,100,000	32,100,000
Income tax holiday, aggregate dollar amount		$ 4,400,000
Income tax holiday, income tax benefits (in dollars per share)		$ 0.01
Foreign tax authority
Income Tax [Line Items]
Tax Cuts and Jobs Act of 2017, change in tax rate, deferred tax asset, provisional income tax expense		$ 9,700,000
Domestic tax authority
Income Tax [Line Items]
Tax Cuts and Jobs Act of 2017, change in tax rate, deferred tax asset, provisional income tax expense		18,900,000
Brazil | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	315,600,000	315,600,000
Saudi Arabia | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	196,800,000	196,800,000
Mexico | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	127,000,000	127,000,000
France | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	93,200,000	93,200,000
United Kingdom | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	121,000,000	121,000,000
Finland | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	57,700,000	57,700,000
FMCTI Merger
Income Tax [Line Items]
Deferred tax liabilities	$ 306,300,000	306,300,000
FMC Technologies
Income Tax [Line Items]
Foreign tax credit carryforwards						$ 2,300,000,000
Federal, State and Foreign Tax
Income Tax [Line Items]
Unrecognized tax benefits, increase from purchase accounting		48,100,000
Federal, State and Foreign Tax | Norway
Income Tax [Line Items]
Unrecognized tax benefits, increase from purchase accounting		$ 45,200,000