Consolidated Financial Statements Consolidated Financial Statements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accounting Policies [Abstract]
Proceeds from sale of finance receivables	$ 6.5	$ 14.3

The cash inflow associated with the sale of receivables arising from the financing of goods and services.

No definition available.

Name:	us-gaap_ProceedsFromSaleOfFinanceReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration