|   | 
Other Investments  | 
||||||
|---|---|---|---|---|---|---|---|
| 
 (at and for the year ended December 31, in millions)   | 
2013 | 2012 | |||||
| 
 Balance at beginning of year  | 
$ | 6 | $ | 18 | |||
| 
 Actual return on plan assets:  | 
|||||||
| 
 Relating to assets still held  | 
1 | 2 | |||||
| 
 Relating to assets sold during the year  | 
— | — | |||||
| 
 Purchases, sales, settlements and maturities:  | 
|||||||
| 
 Purchases  | 
— | — | |||||
| 
 Sales  | 
(3 | ) | (12 | ) | |||
| 
 Settlements/maturities  | 
— | — | |||||
| 
 Gross transfers into Level 3  | 
— | — | |||||
| 
 Gross transfers out of Level 3  | 
— | (2 | ) | ||||
| 
 Balance at end of year  | 
$ | 4 | $ | 6 | |||