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Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Revenues and adjusted segment income by reportable segment
Total revenues	$ 4,048.0	$ 3,349.3	$ 14,700.0
Segment income	100.6	85.9
Intersegment Elimination
Revenues and adjusted segment income by reportable segment
Total revenues	(15.5)	(12.7)
Segment income	(0.2)	(0.1)
Retail | Operating segments
Revenues and adjusted segment income by reportable segment
Total revenues	3,953.7	3,355.1
Segment income	93.3	84.7
Other | Operating segments
Revenues and adjusted segment income by reportable segment
Total revenues	109.8	6.9
Segment income	$ 7.5	$ 1.3

X

- Definition

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Article 5

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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales 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)

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



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-Name Regulation S-X (SX)

-Number 210

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