| ($ in millions) | | | | | | | | | | |
| | | | | | | | | | | |
| For the year ended December 31: | | 2013 | | 2012 | | 2011 | |
| Global Technology Services | | | | | | | |
| Services | | $ | 29,953 | | $ | 31,161 | | $ | 31,746 | |
| Maintenance | | | 7,111 | | | 7,343 | | | 7,515 | |
| Systems | | | 1,322 | | | 1,574 | | | 1,478 | |
| Software | | | 164 | | | 159 | | | 140 | |
| Global Business Services | | | | | | | | | | |
| Services | | $ | 18,065 | | $ | 18,216 | | $ | 18,956 | |
| Software | | | 221 | | | 208 | | | 211 | |
| Systems | | | 109 | | | 142 | | | 118 | |
| Software | | | | | | | | | | |
| Software | | $ | 23,420 | | $ | 23,144 | | $ | 22,921 | |
| Services | | | 2,512 | | | 2,304 | | | 2,022 | |
| Systems and Technology | | | | | | | | | | |
| Servers | | $ | 9,646 | | $ | 11,980 | | $ | 12,362 | |
| Storage | | | 3,041 | | | 3,411 | | | 3,619 | |
| Microelectronics OEM | | | 1,463 | | | 1,572 | | | 1,975 | |
| Retail Store Solutions | | | 6 | | | 357 | | | 753 | |
| Microelectronics Services | | | 215 | | | 346 | | | 277 | |
| Global Financing | | | | | | | | | | |
| Financing | | $ | 1,493 | | $ | 1,471 | | $ | 1,612 | |
| Used equipment sales | | | 529 | | | 542 | | | 490 | |
