Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 16, 2017
Income Tax [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 1.3
Foreign tax credit carryforwards	$ 105.9	$ 34.9
Foreign tax credit carryforwards, expiration date	Dec. 31, 2023
Foreign earnings taxable as dividend	$ 307.6	$ 1,300.0	$ 0.0
Net operating loss carryforwards, expiration date	Dec. 31, 2019
Statutory income tax rate	19.00%	19.30%	34.40%
Deferred tax liabilities	$ 297.2	$ 477.3
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings, provisional income tax expense	11.8	148.7
Effective income tax rate reconciliation, repatriation of foreign earnings, amount	307.0	2,600.0
Tax Cuts and Jobs Act of 2017, change in tax rate, deferred tax asset, provisional income tax expense	25.6
Undistributed Earnings of Foreign Subsidiaries	2,900.0
Income tax holiday, aggregate dollar amount	$ 0.1
Income tax holiday, income tax benefits (in dollars per share)	$ 0
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		9.7
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		18.9
Australia | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	$ 275.0
Saudi Arabia | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	271.0
Mexico | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	185.5
France | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	128.8
Angola | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	186.5
Finland | Foreign tax authority
Income Tax [Line Items]
Operating loss carryforwards	78.5
FMC Technologies
Income Tax [Line Items]
Foreign tax credit carryforwards				$ 2,300.0
Accrued Interest and Penalties
Income Tax [Line Items]
Unrecognized Tax Benefits	2.8	5.9	$ 0.0
Federal, State and Foreign Tax
Income Tax [Line Items]
Unrecognized Tax Benefits	$ 91.0	90.4	$ 16.6
Unrecognized tax benefits, increase from purchase accounting		$ 48.1