Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Summary of Changes in Nonvested Stock and Weighted-Average Grant Date Fair Value) (Detail)

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STOCK-BASED COMPENSATION (Summary of Changes in Nonvested Stock and Weighted-Average Grant Date Fair Value) (Detail) - Nonvested Stock - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Shares      
Nonvested at the beginning of the year 1,700 1,695 1,616
Granted 472 580 621
Vested (698) (480) (479)
Forfeited (43) (95) (63)
Nonvested at the ending of the year 1,431 1,700 1,695
Weighted-Average Grant Date Fair Value      
Nonvested at the beginning of the year $ 57.52 $ 46.50 $ 37.95
Granted 79.26 70.89 57.82
Vested 39.21 35.83 33.05
Forfeited 59.05 52.16 40.99
Nonvested at the ending of the year $ 72.64 $ 57.52 $ 46.50