Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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-Publisher FASB

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Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Name Regulation S-X (SX)

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-Section 02

-Paragraph 19, 20, 22

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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-Name Accounting Standards Codification

-Topic 210

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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-Paragraph 1

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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.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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No definition available.

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Borrowings (Details) - USD ($) $ in Millions	3 Months Ended
Borrowings (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Borrowings
Total long-term debt	$ 748.5	$ 749.8
Total long-term debt, net of current portion	748.5	749.8
3.75% senior notes due 2022
Borrowings
Total long-term debt	$ 349.1	349.1
Interest rate (as a percent)	3.75%
Unamortized discount	$ (0.9)	(0.9)
Par value of senior notes	350.0
3.75% senior notes due 2022 \| Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	348.6
5.125% senior notes due 2020
Borrowings
Total long-term debt	$ 249.4	249.3
Interest rate (as a percent)	5.125%
Unamortized discount	$ (0.6)	(0.7)
Par value of senior notes	250.0
5.125% senior notes due 2020 \| Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	273.0
6.125% senior notes due 2016
Borrowings
Total long-term debt	$ 149.9	149.8
Interest rate (as a percent)	6.125%
Unamortized discount	$ (0.1)	(0.2)
Par value of senior notes	150.0
6.125% senior notes due 2016 \| Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	157.6
Revolving credit facility
Borrowings
Remaining borrowing capacity	600.0
Amount outstanding	0.0		$ 0.0
Industrial development and revenue bonds
Borrowings
Total long-term debt		1.5
Repayment of debt	1.5
Other, including capital lease obligations
Borrowings
Total long-term debt	0.1	0.1
Uncommitted line of credit
Borrowings
Maximum borrowing capacity	45.0	$ 45.0
Amount outstanding	$ 0.0		$ 0.0