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Employee Retirement Plans
 3 Months Ended
Mar. 31, 2015
Employee Retirement Plans  
Employee Retirement Plans

 

K. EMPLOYEE RETIREMENT PLANS

 

Net periodic pension cost for our defined-benefit pension plans was as follows, in millions:

 

 

 

Three Months ended March 31,

 

 

 

2015

 

2014

 

 

 

Qualified

 

Non-Qualified

 

Qualified

 

Non-Qualified

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$
1

 

$

—

 

$
1

 

$

—

 

Interest cost

 
12

 
1

 
13

 
2

 

Expected return on plan assets

 
(11

)

—

 
(12

)

—

 

Amortization of net loss

 
4

 
1

 
3

 

—

 

Net periodic pension cost

 

$
6

 

$
2

 

$
5

 

$
2

 

 

We participate in 21 regional multi-employer pension plans, principally related to building trades; none of the plans are considered significant to us.

 

Effective January 1, 2010, we froze all future benefit accruals under substantially all of our domestic qualified and non-qualified defined benefit pension plans.  Future benefit accruals related to our foreign non-qualified plans were frozen several years ago.