Nonpension Postretirement Benefits (Assumptions Used) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Effect of 1.0% change in discount rate on nonpension postretirement benefit expense	0.4
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to determine accumulated postretirement benefit obligation	3.85%	4.91%
Discount rate used to determine net postretirement benefit cost	4.91%	5.34%	5.54%
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to determine accumulated postretirement benefit obligation	3.71%	3.97%
Discount rate used to determine net postretirement benefit cost	3.97%	4.86%	5.42%