Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies

Schedule of estimated useful lives of assets based on which provisions for depreciation and amortization are computed on a straight-line basis

Useful lives are as follows:

Buildings	3 to 50 years
Furniture and fixtures	1 to 15 years
Capitalized internal use software	1 to 15 years
Service cars and service equipment	1 to 13 years
Other intangible assets	3 to 20 years
Leasehold improvements	The shorter of their economic lives or the lease term

Schedule of estimated useful lives of revenue-earning assets

Revenue Earning Equipment

Revenue earning equipment is stated at cost, net of related discounts. Useful lives are as follows:

Cars	4 to 28 months
Other equipment	24 to 108 months