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Supplemental Cash Flow Information
 3 Months Ended
Aug. 31, 2017
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information

(9) Supplemental Cash Flow Information

Cash paid for interest expense and income taxes for the three-month periods ended August 31 was as follows (in millions):

 

 

 

2017

 

 

2016

 

Cash payments for:

 

 

 

 

 

 

 

 

Interest (net of capitalized interest)

 

$

153

 

 

$

143

 

Income taxes

 

$

96

 

 

$

80

 

Income tax refunds received

 

 

(10

)

 

 

(8

)

Cash tax payments, net

 

$

86

 

 

$

72