content_image/261405.jpg content_image/261409.jpg content_image/261412.jpg
Changes in defined benefit and postretirement benefit plan obligations, assets, funded status and amounts recognized in the consolidated balance sheets were as follows: 

<img src='content_image/261405.jpg'>

The accumulated benefit obligation for all defined benefit pension plans was $8,068 million and $7,322 million at December 31, 2012 and 2011, respectively. 

Additional information related to pension plans was as follows: 

<img src='content_image/261409.jpg'>

## Actuarial Assumptions 

Weighted-average assumptions used to determine benefit obligations at December 31 were as follows: 

<img src='content_image/261412.jpg'>

