GRAINGER W W INC | 2013 | FY | 3

The following assumptions were used to determine net periodic benefit costs at January 1:
 
For the Years Ended December 31,
 
2013

2012

2011
Discount rate
4.00
%
 
4.50
%
 
5.60
%
Expected long-term rate of return on plan assets, net of tax
6.00
%
 
6.00
%
 
6.00
%
Initial healthcare cost trend rate
8.00
%
 
8.50
%
 
9.00
%
Ultimate healthcare cost trend rate
5.00
%
 
5.00
%
 
5.00
%
Year ultimate healthcare cost trend rate reached
2019

 
2019

 
2019


The following assumptions were used to determine benefit obligations at December 31:
 
2013

2012

2011
Discount rate
4.90
%
 
4.00
%
 
4.50
%
Expected long-term rate of return on plan assets, net of tax
5.70
%
 
6.00
%
 
6.00
%
Initial healthcare cost trend rate
7.50
%
 
8.00
%
 
8.50
%
Ultimate healthcare cost trend rate
4.50
%
 
5.00
%
 
5.00
%
Year ultimate healthcare cost trend rate reached
2026

 
2019

 
2019

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