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SHARE-BASED COMPENSATION PLANS AND AWARDS Part 2 (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based compensation expense, retirement eligibility preceding the requisite vesting period	$ 3	$ 2	$ 2
Remaining contractual term and weighted average exercise prices of stock options [Abstract]
Number Outstanding at end of period (in shares)	2,905,600
Weighted-Average Remaining Contractual Life (in years)	7 years
Weighted-Average Exercise Price (in dollars per share)	$ 79
Number Exercisable at end of period (in shares)	1,606,800
Weighted-Average Exercise Price (in dollars per share)	$ 70
Exercise price of options lower range (in dollars per share)	38
Exercise prices of options upper range (in dollars per share)	$ 104
Prices of $38-$50 [Member]
Remaining contractual term and weighted average exercise prices of stock options [Abstract]
Number Outstanding at end of period (in shares)	182,500
Weighted-Average Remaining Contractual Life (in years)	2 years 6 months
Weighted-Average Exercise Price (in dollars per share)	$ 39
Number Exercisable at end of period (in shares)	182,500
Weighted-Average Exercise Price (in dollars per share)	$ 39
Exercise price of options lower range (in dollars per share)	38
Exercise prices of options upper range (in dollars per share)	$ 50
Prices of $51-$73 [Member]
Remaining contractual term and weighted average exercise prices of stock options [Abstract]
Number Outstanding at end of period (in shares)	742,300
Weighted-Average Remaining Contractual Life (in years)	6 years 2 months
Weighted-Average Exercise Price (in dollars per share)	$ 67
Number Exercisable at end of period (in shares)	557,500
Weighted-Average Exercise Price (in dollars per share)	$ 67
Exercise price of options lower range (in dollars per share)	51
Exercise prices of options upper range (in dollars per share)	$ 73
Prices of $74-$89 [Member]
Remaining contractual term and weighted average exercise prices of stock options [Abstract]
Number Outstanding at end of period (in shares)	1,361,100
Weighted-Average Remaining Contractual Life (in years)	7 years 1 month
Weighted-Average Exercise Price (in dollars per share)	$ 80
Number Exercisable at end of period (in shares)	866,800
Weighted-Average Exercise Price (in dollars per share)	$ 79
Exercise price of options lower range (in dollars per share)	74
Exercise prices of options upper range (in dollars per share)	$ 89
Prices of $90-$104 [Member]
Remaining contractual term and weighted average exercise prices of stock options [Abstract]
Number Outstanding at end of period (in shares)	619,700
Weighted-Average Remaining Contractual Life (in years)	9 years 2 months
Weighted-Average Exercise Price (in dollars per share)	$ 104
Number Exercisable at end of period (in shares)	0
Weighted-Average Exercise Price (in dollars per share)	$ 0
Exercise price of options lower range (in dollars per share)	90
Exercise prices of options upper range (in dollars per share)	$ 104
Stock Option [Member]
Remaining contractual term and weighted average exercise prices of stock options [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 11
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 10
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	5 years 9 months

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