CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income	$ 103.2	$ 73.7
Other comprehensive income:
Foreign currency translation adjustment, net	(10.1)	15.1
Change in unrecognized prior service cost and actuarial losses related to our pension and other postretirement benefit plans, net	3.0	3.4
Comprehensive income	96.1	92.2
Parent [Member]
Net income	101.1	71.5
Other comprehensive income:
Foreign currency translation adjustment, net	(9.6)	14.9
Change in unrecognized prior service cost and actuarial losses related to our pension and other postretirement benefit plans, net	3.0	3.4
Comprehensive income	94.5	89.8
Noncontrolling Interests [Member]
Net income	2.1	2.2
Other comprehensive income:
Foreign currency translation adjustment, net	(0.5)	0.2
Change in unrecognized prior service cost and actuarial losses related to our pension and other postretirement benefit plans, net	0	0
Comprehensive income	$ 1.6	$ 2.4