Supplemental Cash Flow Data (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Changes in Operating Capital [Abstract]
(Increase) decrease in accounts receivable	$ (471.4)	$ (292.4)	$ 410.9
(Increase) decrease in work in process and other current assets	(53.2)	(209.7)	113.9
Increase (decrease) in accounts payable	262.7	455.9	(10.2)
Increase (decrease) in customer advances and other current liabilities	(4.5)	183.2	(75.9)
Change in other assets and liabilities, net	295.6	173.3	125.7
Change in operating capital	29.2	310.3	564.4
Income taxes paid	365.4	293.3	270.4
Interest paid	$ 153.9	$ 140.8	$ 86.8

Decrease in customer advances and other current liabilities

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- Definition

(Increase) decrease in work in progress and other current assets

+ References

No definition available.

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services.

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The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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The increase (decrease) during the reporting period of all assets and liabilities used in operating activities.

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The increase (decrease) during the reporting period in other assets used in operating activities less other operating liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets and liabilities, other noncurrent assets and liabilities, or a combination of other current and noncurrent assets and liabilities.

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The amount of cash paid for interest during the period.

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