Financial Instruments - Derivatives (Details) € in Millions, ₩ in Millions, ¥ in Millions, ¥ in Millions, £ in Millions, SEK in Millions, PLN in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017 PLN t	Dec. 31, 2016 PLN t	Sep. 30, 2017 USD ($)	Sep. 30, 2017 JPY (¥)	Sep. 30, 2017 KRW (₩)	Sep. 30, 2017 CNY (¥)	Sep. 30, 2017 SEK	Sep. 30, 2017 EUR (€)	Sep. 30, 2017 GBP (£)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 JPY (¥)	Dec. 31, 2016 KRW (₩)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 SEK	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 GBP (£)	Jul. 20, 2016 USD ($)
Foreign currency | US dollar | Maturity December 2017
Derivative [Line Items]
Notional amount of currency derivatives								€ 100.0							€ 0.0
Foreign currency | Korean won | Maturity December 2017
Derivative [Line Items]
Notional amount of currency derivatives			$ 5.1	¥ 208.5				3.2		$ 14.2	¥ 539.9				0.0
Foreign currency | Japanese yen | Maturity December 2017
Derivative [Line Items]
Notional amount of currency derivatives			0.5		₩ 1,441.5	¥ 18.1				2.0		₩ 5,689.2	¥ 68.7
Foreign currency | Euro | Maturity December 2017
Derivative [Line Items]
Notional amount of currency derivatives	PLN 33.6	PLN 18.8				¥ 30.2			£ 1.0				¥ 0.0			£ 4.2
Foreign currency | Euro | Maturity May 2018
Derivative [Line Items]
Notional amount of currency derivatives | SEK							SEK 267.4							SEK 0.0
Foreign currency | Euro | Maturity December 2018
Derivative [Line Items]
Notional amount of currency derivatives			30.3	¥ 774.0						35.3	¥ 1,004.8
Foreign currency | Chinese renminbi | Maturity June 2018
Derivative [Line Items]
Notional amount of currency derivatives								31.8							0.0
Foreign currency | Chinese renminbi | Maturity November 2018
Derivative [Line Items]
Notional amount of currency derivatives | $			49.0							33.5
Foreign currency | Swedish krona | Maturity December 2017
Derivative [Line Items]
Notional amount of currency derivatives								12.5							48.2
Foreign currency | Brazil, Brazil Real | Maturity January 2018
Derivative [Line Items]
Notional amount of currency derivatives								€ 1.1							€ 0.0
Foreign currency | Mexico, Pesos | Maturity December 2017
Derivative [Line Items]
Notional amount of currency derivatives | $			$ 4.9							$ 10.5
Commodity contracts | Maturity December 2017
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | t	49.1	213.8
Interest rate swaps
Derivative [Line Items]
Notional amount of currency derivatives | $																	$ 384.0