Total amount received by an entity from a vendor under a cooperative advertising arrangement that has been offset against advertising expense.

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 02-16

-Paragraph 6

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cooperative Advertising

-URI http://asc.fasb.org/extlink&oid=6509061

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 50

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6408645&loc=d3e63872-111659

Name:	us-gaap_CooperativeAdvertisingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Description of Business and Summary of Significant Accounting Policies (Revenue Recognition, Advertising) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Chargeback Reserves [Member]	Dec. 31, 2012 Chargeback Reserves [Member]	Dec. 31, 2011 Chargeback Reserves [Member]	Dec. 31, 2010 Chargeback Reserves [Member]
Revenue Recognition [Abstract]
Chargeback liabilities				$ 67.6	$ 56.0	$ 46.2	$ 42.5
Advertising [Abstract]
Advertising expense, Net	166.4	135.7	130.2
Manufacturer advertising reimbursements	$ 42.4	$ 38.3	$ 28.2