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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

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The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

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

-Publisher FASB

-Name Accounting Standards Codification

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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No definition available.

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Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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

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Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

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

-Publisher FASB

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The amount of the cost recognized during the period for defined contribution plans.

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-Name Accounting Standards Codification

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EMPLOYEE BENEFIT PLANS - DEFINED CONTRIBUTION BENEFIT PLANS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Contribution Benefit Plans
Total costs incurred for defined contribution benefit plans	$ 8.6	$ 8.2	$ 5.5
Deferred compensation plans
Deferred compensation obligation classified as an equity instrument	7.0	8.0
Deferred compensation obligation associated with deferrals that allow for distribution in cash	15.5	15.1
Costs incurred under deferred compensation arrangement	1.9	1.5	1.1
Pension Benefits
Employee Benefit Plans
Expected contributions to the plans during the next fiscal year	1.5
Expected payments, reflecting expected future service
2015	41.2
2016	42.3
2017	44.3
2018	44.1
2019	45.6
2020 through 2024	224.3
Other Benefits
Employee Benefit Plans
Expected contributions to the plans during the next fiscal year	1.2
Expected payments, reflecting expected future service
2015	9.4
2016	10.0
2017	10.9
2018	11.7
2019	12.5
2020 through 2024	$ 73.6