Employee Benefit Plans - Estimated Benefit Payments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2015	$ 10.9
2016	11.2
2017	11.4
2018	11.6
2019	11.8
2020-2024	62.5
Non-qualified Plan Benefits
Defined Benefit Plan Disclosure [Line Items]
2015	0.7
2016	3.6
2017	0.1
2018	1.0
2019	0.1
2020-2024	0.7
Other Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2015	0.9
2016	0.9
2017	0.8
2018	0.8
2019	0.8
2020-2024	$ 3.4

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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.

+ 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 (f)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

+ Details

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- Definition

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.

+ References

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- Definition

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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- Definition

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.

+ References

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