Supplemental Balance Sheet Information (Components of Other Assets) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule Of Other Assets [Line Items]
Deferred tax assets	$ 939.6	$ 944.7
Long-term receivables	177.5	168.0
Capitalized software	121.5	122.9
Investments	33.3	33.8
Tooling	32.8	37.9
Other	36.5	34.5
Other assets	$ 1,341.2	$ 1,341.8