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Employee Pension Plans
 6 Months Ended
Jun. 30, 2014
PLUM CREEK TIMBER CO INC [Member]
  
Employee Pension Plans
Employee Pension Plans

The components of pension cost were as follows for the quarterly and six-month periods ended June 30 (in millions): 
 
Quarter Ended June 30,
 
2014
 
2013
Service Cost
$
2

 
$
2

Interest Cost
2

 
2

Expected Return on Plan Assets
(3
)
 
(2
)
Recognized Actuarial Loss
1

 
1

Total Pension Cost
$
2

 
$
3

 
 
 
 
 
Six Months Ended June 30,
 
2014
 
2013
Service Cost
$
4

 
$
4

Interest Cost
4

 
4

Expected Return on Plan Assets
(5
)
 
(4
)
Recognized Actuarial Loss
1

 
2

Total Pension Cost
$
4

 
$
6
PLUM CREEK TIMBERLANDS L P [Member]
  
Employee Pension Plans
Employee Pension Plans

The components of pension cost were as follows for the quarterly and six-month periods ended June 30 (in millions):
 
Quarter Ended June 30,
 
2014
 
2013
Service Cost
$
2

 
$
2

Interest Cost
2

 
2

Expected Return on Plan Assets
(3
)
 
(2
)
Recognized Actuarial Loss
1

 
1

Total Pension Cost
$
2

 
$
3

 
 
 
 
 
Six Months Ended June 30,
 
2014
 
2013
Service Cost
$
4

 
$
4

Interest Cost
4

 
4

Expected Return on Plan Assets
(5
)
 
(4
)
Recognized Actuarial Loss
1

 
2

Total Pension Cost
$
4

 
$
6