XML 29 R3.htm IDEA: XBRL DOCUMENT v3.6.0.2
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Nov. 30, 2016
May 31, 2016
CURRENT ASSETS    
Allowances for receivables $ 218 $ 178
Allowances for spare parts, supplies and fuel $ 225 $ 218
COMMON STOCKHOLDERS' INVESTMENT    
Common stock, par value $ 0.10 $ 0.10
Common stock, shares authorized 800 800
Common stock, shares issued 318 318