Debt Facility Applicable Margin

No definition available.

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Period Type:	instant

- Definition

Debt Instrument, Consolidated Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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- Definition

Debt Instrument, Consolidated Leverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Maximum Consolidated Leverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: 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(b),22(b))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Details

Name:	us-gaap_LineOfCreditFacilityLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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.

+ References

+ Details

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

- Definition

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

+ References

+ Details

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

- 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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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

Bank Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Line of Credit Facility [Line Items]
Revolving credit facility	$ 400.0		$ 400.0
Increase in revolving credit facility	500.0		500.0
Aggregate bank borrowings	188.8		188.8		56.7
Additional bank borrowings	190.0		190.0
Consolidated leverage ratio			1.7
Consolidated interest coverage ratio			4.9
Credit agreement, average borrowing rate	2.00%	2.40%	2.40%	2.50%
Minimum [Member]
Line of Credit Facility [Line Items]
Consolidated interest coverage ratio			2.0
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Additional bank borrowings	$ 8.3		$ 8.3
Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Consolidated leverage ratio			3.25
First Quarter Leverage Ratio [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio			3.5
Base Rate [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	0.00%		0.00%
Base Rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	0.00%		0.00%
Base Rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%		1.00%
LIBOR [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%		1.00%
LIBOR [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%		1.00%
LIBOR [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	2.00%		2.00%