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Summary of Significant Accounting Policies - Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disposal Group, Including Discontinued Operations [Line Items]
Sales	$ 1,047.5us-gaap_SalesRevenueGoodsNet	$ 1,069.6us-gaap_SalesRevenueGoodsNet	$ 1,119.0us-gaap_SalesRevenueGoodsNet	$ 987.3us-gaap_SalesRevenueGoodsNet	$ 915.3us-gaap_SalesRevenueGoodsNet	$ 972.4us-gaap_SalesRevenueGoodsNet	$ 1,056.8us-gaap_SalesRevenueGoodsNet	$ 1,099.0us-gaap_SalesRevenueGoodsNet	$ 4,223.4us-gaap_SalesRevenueGoodsNet	$ 4,043.5us-gaap_SalesRevenueGoodsNet	$ 4,666.9us-gaap_SalesRevenueGoodsNet

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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