content_image/1049632.jpg content_image/1049633.jpg
The net periodic benefit cost/(credit) of defined benefit pension plans includes: 

<img src='content_image/1049632.jpg'>

Pension settlement charges were recognized after determining the annual lump sum payments will exceed the annual interest and service costs for certain pension plans, including the primary U.S. pension plan in 2019, 2018 and 2017. 

Changes in defined benefit pension plan obligations, assets, funded status and amounts recognized in the consolidated balance sheets were as follows: 

<img src='content_image/1049633.jpg'>

The accumulated benefit obligation for defined benefit pension plans was $2.9 billion and $6.0 billion at December 31, 2019 and 2018, respectively. 

