SHAREHOLDERS' EQUITY - Common shares (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Authorized share capital, common (in shares)	800,000,000	800,000,000
Par value per share, common (in usd per share)	$ 0.0125	$ 0.0125
Common Shares Issued and Outstanding [Roll Forward]
Shares issued, balance at beginning of year (in shares)	176,580,000
Total shares issued at end of year (in shares)	176,580,000	176,580,000
Treasury Shares Issued and Outstanding [Roll Forward]
Treasury shares, balance at beginning of year (in shares)	(93,419,000)
Total treasury shares at end of year (in shares)	(92,994,000)	(93,419,000)
Total shares outstanding (in shares)	83,586,000	83,161,000
Cash dividends declared per common share (in usd per share)	$ 1.57	$ 1.53	$ 1.43
Common stocks
Common Shares Issued and Outstanding [Roll Forward]
Shares issued, balance at beginning of year (in shares)	176,580,000	176,580,000	176,240,000
Shares issued (in shares)	0	0	340,000
Total shares issued at end of year (in shares)	176,580,000	176,580,000	176,580,000
Treasury Shares Issued and Outstanding [Roll Forward]
Treasury shares, balance at beginning of year (in shares)	(93,419,000)	(90,139,000)	(80,174,000)
Shares repurchased (in shares)	(200,000)	(4,288,000)	(10,508,000)
Shares reissued from treasury (in shares)	625,000	1,008,000	543,000
Total treasury shares at end of year (in shares)	(92,994,000)	(93,419,000)	(90,139,000)
Total shares outstanding (in shares)	83,586,000	83,161,000	86,441,000