XML 152 R135.htm IDEA: XBRL DOCUMENT v3.8.0.1
SUBSEQUENT EVENTS - Additional Information (Detail)
shares in Thousands
Feb. 13, 2018
Mar. 16, 2018
shares
Dec. 31, 2017
shares
Dec. 31, 2016
shares
Dec. 31, 2015
shares
Subsequent Event [Line Items]          
Common Stock, Shares, Outstanding     390,455 405,810 424,380
Subsequent Event          
Subsequent Event [Line Items]          
Two-for-one Stock Split, Conversion Ratio 2        
Common Stock as a Percentage of Two-for-one Stock Split Dividend 100.00%        
Two-for-one Stock Split, Common Stock, Shares, Outstanding   781,000