| | | | | | | | | | |
| | | | | | | Year ended December 31, |
| (in millions) | | 2013 | 2012 | 2011 |
| Credit loss component, beginning of year | $ | 1,289 | 1,272 | 1,043 |
| Additions: | | | | |
| | Initial credit impairments | | 21 | 55 | 87 |
| | Subsequent credit impairments | | 86 | 182 | 335 |
| | | Total additions | | 107 | 237 | 422 |
| Reductions: | | | | |
| | For securities sold or matured | | (194) | (194) | (160) |
| | For securities derecognized due to changes in consolidation status of variable interest entities | | - | - | (2) |
| | For recoveries of previous credit impairments (1) | | (31) | (26) | (31) |
| | | Total reductions | | (225) | (220) | (193) |
| Credit loss component, end of year | $ | 1,171 | 1,289 | 1,272 |
| | | | | | | | | | |
