CAPITAL STOCK - Number of Stock Options and Weighted-average Exercise Prices (Detail)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Options
Outstanding, beginning of year (in shares) | shares	6,042,839
Granted (in shares) | shares	1,250,198
Exercised (in shares) | shares	(718,275)
Forfeited (in shares) | shares	(141,176)
Outstanding, end of year (in shares) | shares	6,433,586
Exercisable, end of year (in shares) | shares	3,897,279
Price
Outstanding, beginning of year (USD per share) | $ / shares	$ 77.36
Granted (USD per share) | $ / shares	118.97
Exercised (USD per share) | $ / shares	65.98
Forfeited (USD per share) | $ / shares	95.15
Outstanding, end of year (USD per share) | $ / shares	86.33
Exercisable, end of year (USD per share) | $ / shares	$ 71.21