Debt (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Notes and other indebtedness
Amount outstanding	$ 1,011.6	$ 1,380.3
Less current portion of debt	519.4	320.8
Long-term debt	492.2	1,059.5
Accounts receivable securitization program
Notes and other indebtedness
Amount outstanding	135.0	135.0
Secured promissory notes
Notes and other indebtedness
Amount outstanding	14.5	16.6
Equipment credit facilities
Notes and other indebtedness
Amount outstanding	12.0	10.0
Real estate credit agreement
Notes and other indebtedness
Amount outstanding	101.7	105.2
Term Loan Credit Facility
Notes and other indebtedness
Amount outstanding	125.0	125.0
Series C convertible senior debentures
Notes and other indebtedness
Amount outstanding	90.1	86.5
Revolving credit facilities
Notes and other indebtedness
Amount outstanding	31.1	328.3
Senior notes
Notes and other indebtedness
Amount outstanding	370.0	370.0
Related party credit agreements
Notes and other indebtedness
Amount outstanding	114.9	156.7
Other indebtedness
Notes and other indebtedness
Amount outstanding	$ 17.3	$ 47.0

Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant