Commitments and Contingencies Commitments and Contingencies (Extended Warranty Accrual) (Details) (Extended Warranty [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Extended Warranty [Member]
Balance at beginning of period	$ 375.1	$ 372.0
Amortization of deferred revenue for the period	(23.7)	(22.5)
Additions for extended warranties issued during the period	21.2	23.2
Changes to accruals related to preexisting warranties	2.5	0
Translation	(0.3)	0.3
Balance at end of period	$ 374.8	$ 373.0

Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

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Amount as of the balance sheet date of the aggregate extended product warranty liability. Does not include the ending balance for the standard product warranty liability.

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-Name FASB Interpretation (FIN)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Increase or Decrease in extended product warranty liability attributable to currency translation. Does not include any Increase or Decrease in standard product warranty liability due to currency translation.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting extended product warranties (including adjustments related to changes in estimates). Does not include any Increase or Decrease in the liability for accruals related to standard product warranties.

+ References

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Represents the aggregate increase in the liability for accruals related to extended product warranties issued during the reporting period. Does not include any increase in the liability for accruals related to standard product warranties.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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