Income Taxes - Multiple Tax Jurisdictions, both within and outside of the United States (Details)	12 Months Ended
	Dec. 31, 2015
Domestic Tax Authority | Internal Revenue Service (IRS) | Minimum
Income Tax Examination
Open tax year	2012
Domestic Tax Authority | Internal Revenue Service (IRS) | Maximum
Income Tax Examination
Open tax year	2015
State and Local Jurisdiction | Minimum
Income Tax Examination
Open tax year	2011
State and Local Jurisdiction | Maximum
Income Tax Examination
Open tax year	2015
Foreign Tax Authority | Canada Revenue Agency | Minimum
Income Tax Examination
Open tax year	2010
Foreign Tax Authority | Canada Revenue Agency | Maximum
Income Tax Examination
Open tax year	2015
Foreign Tax Authority | Swedish Tax Agency | Minimum
Income Tax Examination
Open tax year	2013
Foreign Tax Authority | Swedish Tax Agency | Maximum
Income Tax Examination
Open tax year	2015
Foreign Tax Authority | Her Majesty's Revenue and Customs (HMRC) | Minimum
Income Tax Examination
Open tax year	2011
Foreign Tax Authority | Her Majesty's Revenue and Customs (HMRC) | Maximum
Income Tax Examination
Open tax year	2015