Divestitures (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended											12 Months Ended			21 Months Ended	39 Months Ended
	Dec. 31, 2017	Sep. 29, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Oct. 02, 2015	Apr. 03, 2015	Dec. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of land and building												$ 1.4	$ (2.1)	$ (2.5)
Asia Pacific
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Foreign currency transaction adjustment																$ (46.9)
Asia Pacific | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax Gain (Loss)														(5.7)
Asia Pacific | Disposed of by Sale | China Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds		$ 8.8
Pre-tax Gain (Loss)		$ (19.9)
Asia Pacific | Disposed of by Sale | China Operations | Cost of Sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of long-lived assets to be disposed of					$ 11.0
Asia Pacific | Disposed of by Sale | Pakistan Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds				$ 5.3
Pre-tax Gain (Loss)				$ (3.5)
Asia Pacific | Disposed of by Sale | India Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds								$ 10.8
Pre-tax Gain (Loss)								$ 1.6
Asia Pacific | Disposed of by Sale | Thailand Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds									$ 88.0
Pre-tax Gain (Loss)									$ 16.1					$ (7.6)
Asia Pacific | Disposed of by Sale | Fiji Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds										$ 9.3
Pre-tax Gain (Loss)										(2.6)
Asia Pacific | Disposed of by Sale | Keystone Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds										11.0
Pre-tax Gain (Loss)										$ 3.6
Asia Pacific | Disposed of by Sale | PDP and PDEP Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds											$ 67.1
Pre-tax Gain (Loss)											$ 17.6
Asia Pacific | Closure | New Zealand Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds	$ 10.3											$ 10.3			$ 10.3	$ 10.3
Pre-tax Gain (Loss)	5.4
Foreign currency transaction adjustment	0.9
Gain on sale of land and building	$ 4.5
Asia Pacific | Closure | Australia Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds			$ 0.0
Pre-tax Gain (Loss)			(4.2)
Africa
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Foreign currency transaction adjustment															$ (79.4)
Africa | Disposed of by Sale | Algeria Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds			3.8
Pre-tax Gain (Loss)			$ (38.0)
Africa | Disposed of by Sale | Zambia Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds						$ 9.8
Pre-tax Gain (Loss)						$ (14.4)
Africa | Disposed of by Sale | Egypt Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Proceeds							$ 5.8
Pre-tax Gain (Loss)							$ (8.4)
Africa | Closure | Durban Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax Gain (Loss)					1.6
Africa | Closure | National Cables Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax Gain (Loss)					$ (29.4)