Asset Impairments, Restructuring, and Other Special Charges (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended			13 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 31, 2018
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 697.4	$ 126.7	$ 141.0
Asset impairment charges	151.5
Impairment of intangibles	50.0
Asset impairment (gains from facility sales) and other special charges:	462.5	$ 255.8	$ 226.7
Outside US
Restructuring Cost and Reserve [Line Items]
Severance costs	284.9
PUERTO RICO
Restructuring Cost and Reserve [Line Items]
Asset impairment (gains from facility sales) and other special charges:	43.4
United States
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 412.5
United States | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Payments for restructuring				$ 300.0