Income Taxes - Tax Jurisdictions and Years Currently under Audit Exam (Details) $ in Millions	3 Months Ended
	Jun. 30, 2016 USD ($)
Income Tax Examination [Line Items]
Estimated benefit to tax expense	$ 100
Belgium | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2010
Belgium | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2012
France | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2011
France | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2015
Germany | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2007
Germany | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2012
SPAIN | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2011
SPAIN | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2014
United Kingdom | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2011
United Kingdom | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2013
United States | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2013
United States | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2014
Examination Period One | Brazil | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2004
Examination Period One | Brazil | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2008
Examination Period One | Italy
Income Tax Examination [Line Items]
Tax years currently under audit exam	2006
Examination Period One | Korea
Income Tax Examination [Line Items]
Tax years currently under audit exam	2015
Examination Period One | Mexico | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2012
Examination Period One | Mexico | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2013
Examination Period Two | Brazil | Earliest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2011
Examination Period Two | Brazil | Latest tax year under exam
Income Tax Examination [Line Items]
Tax years currently under audit exam	2012
Examination Period Two | Italy
Income Tax Examination [Line Items]
Tax years currently under audit exam	2011
Examination Period Two | Mexico
Income Tax Examination [Line Items]
Tax years currently under audit exam	2015