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Long-term Debt (Details) (USD $)
In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Debt Instrument

Long-term Debt

$ 1,483.9

$ 1,483.4

Less: current portion

353.2

^[1]

353.6

^[1]

Long-term Debt, Excluding Current Maturities

1,130.7

1,129.8

6.25% Notes

Debt Instrument

Debt Instrument, Interest Rate, Stated Percentage

6.25%

Debt Instrument, Maturity Date

Nov. 15, 2014

Debt Instrument, Unamortized Discount

0.1

Debt Instrument, Interest Rate, Effective Percentage

6.29%

Long-term Debt, Gross

350.9

351.3

Long-term Debt, Fair Value

361.6

^[2]

365.6

^[2]

2.25% Notes

Debt Instrument

Debt Instrument, Interest Rate, Stated Percentage

2.25%

Debt Instrument, Maturity Date

Nov. 15, 2017

Debt Instrument, Unamortized Discount

0.5

Debt Instrument, Interest Rate, Effective Percentage

2.30%

Long-term Debt, Gross

299.5

299.4

Long-term Debt, Fair Value

302.3

^[2]

293.0

^[2]

4.00% Notes

Debt Instrument

Debt Instrument, Interest Rate, Stated Percentage

4.00%

Debt Instrument, Maturity Date

Mar. 15, 2022

Debt Instrument, Unamortized Discount

2.5

Debt Instrument, Interest Rate, Effective Percentage

4.13%

Long-term Debt, Gross

247.5

247.4

Long-term Debt, Fair Value

249.0

^[2]

241.6

^[2]

3.75% Notes

Debt Instrument

Debt Instrument, Interest Rate, Stated Percentage

3.75%

Debt Instrument, Maturity Date

Feb. 15, 2023

Debt Instrument, Unamortized Discount

1.3

Debt Instrument, Interest Rate, Effective Percentage

4.32%

Long-term Debt, Gross

498.7

498.6

Long-term Debt, Fair Value

485.7

^[2]

467.3

^[2]

Other notes payable and capitalized leases

Debt Instrument

Long-term Debt, Gross

87.3

86.7

Long-term Debt, Fair Value

$ 89.5

^[2]

$ 87.8

^[2]

[1]	We included our 6.25% Senior Unsecured Notes due 2014 (the "6.25% Notes") in the current portion of long-term debt on our March 31, 2014 unaudited Consolidated Balance Sheet and December 31, 2013 Consolidated Balance Sheet because the 6.25% Notes were scheduled to mature on November 15, 2014. See Note 15 for information regarding subsequent events.
[2]	See Note 12 for information on the fair value measurement of our long-term debt.

X

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



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X

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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-Publisher FASB

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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X

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ 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

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