Restructuring, Impairment and Transaction-Related Charges (Schedule of Restructuring Reserves) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 25.9us-gaap_RestructuringReserve
Expense (income)	10.1us-gaap_RestructuringCharges
Cash receipts (payments)	(5.7)us-gaap_PaymentsForRestructuring
Non-cash adjustments	(5.6)
Balance, end of period	24.7us-gaap_RestructuringReserve
Long-term restructuring reserve	5.5us-gaap_RestructuringReserveNoncurrent	6.1us-gaap_RestructuringReserveNoncurrent
Employee Terminations Charges [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	10.0
Expense (income)	5.1
Cash receipts (payments)	(7.7)
Non-cash adjustments	0
Balance, end of period	7.4
Impairment Charges [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0
Expense (income)	6.3
Cash receipts (payments)	0
Non-cash adjustments	(6.3)
Balance, end of period	0
Transaction-Related Charges (Income) [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0.5
Expense (income)	(9.2)
Cash receipts (payments)	9.4
Non-cash adjustments	0
Balance, end of period	0.7
Integration Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	1.8
Expense (income)	1.8
Cash receipts (payments)	(2.1)
Non-cash adjustments	0
Balance, end of period	1.5
Other Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	13.6
Expense (income)	6.1
Cash receipts (payments)	(5.3)
Non-cash adjustments	0.7
Balance, end of period	15.1
Accrued Liabilities [Member]
Restructuring Reserve [Roll Forward]
Short-term restructuring reserve	17.0
Accounts Payable [Member]
Restructuring Reserve [Roll Forward]
Short-term restructuring reserve	1.9
Other Liabilities, Noncurrent [Member]
Restructuring Reserve [Roll Forward]
Long-term restructuring reserve	5.8
Other Noncurrent Liabilities, Restructuring Reserves [Member]
Restructuring Reserve [Roll Forward]
Long-term restructuring reserve	5.5
Other Noncurrent Liabilities, MEPP's withdrawal liability [Member]
Restructuring Reserve [Roll Forward]
Long-term restructuring reserve	$ 0.3

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Section 50

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-Publisher SEC

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-Number Topic 5

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

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- Definition

Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 4

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

-Publisher FASB

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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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- Definition

Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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

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