Contingencies (Narrative) (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended								12 Months Ended
	Jan. 31, 2015	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Apr. 18, 2018	Oct. 03, 2017	Jul. 31, 2013
Loss Contingencies [Line Items]
Revenue		$ 1,401.7	$ 1,424.2	$ 1,351.9	$ 1,393.5	$ 1,568.8	$ 1,417.8	$ 1,395.9	$ 1,333.1	$ 5,571.3	$ 5,715.6	$ 5,717.7
Other expense, net										(7.1)	$ (34.6)	$ (172.9)
FCPA
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party	$ 135.0
Assessment for 2012
Loss Contingencies [Line Items]
Assessment of contingencies, including penalties and accruing interest													$ 243.0		$ 306.0
Assessment of contingencies, including penalties and accruing interest, adjustment													$ (63.0)
Assessment for 2017
Loss Contingencies [Line Items]
Assessment of contingencies, including penalties and accruing interest														$ 236.0
IPI Tax on Cosmetics
Loss Contingencies [Line Items]
Estimated litigation liability			195.0
Revenue										168.0
Other expense, net										27.0
Loss contingency, estimate of possible loss			$ 220.0
Loss contingency accrual, tax reserve		73.0								73.0
Brazil labor-related
Loss Contingencies [Line Items]
Estimated litigation liability		$ 11.0								$ 11.0