Defined benefit plan, plan assets, period increase (decrease)

No definition available.

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- Definition

defined contribution plan employer nonmatching contribution percent

+ References

No definition available.

+ Details

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- Definition

Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Gain or Loss

-URI http://asc.fasb.org/extlink&oid=6514294

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 60

-Glossary Gain or Loss

-URI http://asc.fasb.org/extlink&oid=6749293

+ Details

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- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

+ References

+ Details

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- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

+ Details

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Period Type:	instant

- Definition

Net increase or decrease in the plan benefit obligation during the reporting period.

+ References

+ Details

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Period Type:	duration

- Definition

The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(7)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Plan Curtailment

-URI http://asc.fasb.org/extlink&oid=6520938

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 15

-Paragraph 6

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927

+ Details

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- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

+ Details

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Pensions and Postretirement Benefits Other than Pensions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2012 Update for plan amendment in 2012 [Member] Pension Plans [Member]	Jun. 30, 2012 Update for plan amendment in 2012 [Member] Other Postretirement Benefit Plans [Member]	Jun. 30, 2011 Update for plan amendment in 2012 [Member] Other Postretirement Benefit Plans [Member]	Dec. 31, 2011 Prior to 2012 plan amendment [Member] Pension Plans [Member]	Dec. 31, 2011 Prior to 2012 plan amendment [Member] Other Postretirement Benefit Plans [Member]
defined contribution plan employer nonmatching contribution percent			2.00%
Discount rate assumption			4.00%		3.75%	4.25%	4.00%
Curtailment loss			$ (4.0)
Projected benefit obligation, period increase (decrease)			1.0	(40.5)
Plan assets, period increase (decrease)			29.4
Actuarial gain (loss)			28.4	(21.3)
Amortization of prior service cost (credit)			(4.0)	(61.8)
Company contributions	$ 16.8	$ 21.7