Accounting policies

Depreciation/amortization periods  
Trademarks 20 years
Distribution networks 10 years
Product and software development 3 to 8 years
Aircraft engine projects 35 years
* The depreciation/amortization period for aircraft engine projects was changed from 20 to 35 years as of 2010.

Sources of estimation uncertainty

    Entrance  Capitalized    
    fees,  product and Other Total
    industrial software intangible intangible
Intangible assets, acquisition costs Goodwill(1 programs development assets(2 assets
 Balance-sheet amount 2009 23,827 3,833 25,148 6,719 59,527
 Capital expenditures(3 - 15 3,255 54 3,324
 Sales/scrapping - 0 (156) (79) (235)
 Acquired and divested operations (70) 0 0 0 (70)
 Translation differences (847) (49) (400) 138 (1,158)
 Reclassifications and others 26 1 4 57 88
Balance-sheet amount 2010 22,936 3,800 27,851 6,889 61,476
           
Capital expenditures(3 - 109 4,238 122 4,469
Sales/scrapping - (484) (657) (323) (1,464)
Acquired and divested operations  967 0 (4) 0 963
Translation differences 272 1 431 (32) 672
Reclassified to assets held for sale (274) (3,199) (1,963) (60) (5,496)
Reclassifications and other (2) (3) 6 54 55
Balance-sheet amount 2011 23,899 224 29,902 6,650 60,675
    Entrance Capitalized    
    fees, product and Other Total
Accumulated depreciation   industrial software intangible  intangible
and amortization Goodwill programs development assets(2 assets
 Balance-sheet amount 2009 - 1,762 13,739 2,398 17,899
 Depreciation and amortization(5 - 59 2,857 389 3,305
 Sales/scrapping - 0 (45) (78) (123)
 Acquired and divested operations - 0 0 0 0
 Translation differences - (1) (285) (84) (370)
 Reclassifications and other - 0 5 46 51
Balance-sheet amount 2010 - 1,820 16,271 2,671 20,762
           
Depreciation and amortization(5 - 76 2,788 383 3,247
Sales/scrapping - (265) (406) (322) (993)
Acquired and divested operations  - 0 0 0 0
Translation differences - 0 312 33 345
Reclassified to assets held for sale  - (1,596) (570) (24) (2,190)
Reclassifications and other - (2) 1 (2) (3)
Balance-sheet amount 2011 - 33 18,396 2,739 21,168
           
Net value in balance sheet 2010(4 22,936 1,980 11,580 4,218 40,714
Net value in balance sheet 2011(4 23,899 191 11,506 3,911 39,507

1) Includes on the date of IFRS adoption, costs of 14,184 and accumulated amortization of 3,863.
2) Other intangible assets mainly consist of trademarks and distribution networks.
3) Includes capitalized borrowing costs of 112 (25).
4) Costs less accumulated depreciation, amortization and impairments.
5) Of which impairments 74 (7).

Goodwill per Business Area 2011 2010
Volvo Trucks 3,975 3,913
Renault Trucks 2,230 2,249
Trucks Asia 6,269 6,041
North American Trucks 1,354 1,334
Construction Equipment 7,764 7,806
Buses 1,169 1,174
Other business areas 1,138 419
Total goodwill value 23,899 22,936