v3.3.1.900

SHARE-BASED COMPENSATION (DETAILS) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-Based Compensation
Share-based compensation expense	$ 46	$ 49	$ 53
Additional disclosures
Weighted-average grant date fair value (in dollars per share)	$ 19.36	$ 28.25	$ 26.95
Total intrinsic value of options exercised (in dollars)	$ 11	$ 34	$ 29
Restricted Stock Units
Restricted stock units outstanding at beginning of period (in shares)	1,149,538
Granted (in shares)	499,961
Vested/issued (in shares)	(250,656)
Forfeited/cancelled (in shares)	(238,215)
Restricted stock units outstanding at end of period (in shares)	1,160,628	1,149,538
Stock option awards
Fair Value Assumptions
Expected option term	5 years 10 months 13 days	6 years 7 days	6 years
Expected dividend yield (as a percent)	1.67%	1.51%	1.45%
Expected volatility (as a percent)	27.47%	40.91%	43.23%
Risk-free interest rate (as a percent)	1.73%	1.84%	1.01%
Options
Outstanding at beginning of period (in shares)	4,533,492
Granted (in shares)	868,825
Exercised (in shares)	(455,612)
Forfeited or expired (in shares)	(151,034)
Outstanding at end of period (in shares)	4,795,671	4,533,492
Exercisable at end of period (in shares)	3,249,937
Weighted-Average Exercise Price
Outstanding balance at beginning of period (in dollars per share)	$ 73.70
Granted (in dollars per share)	81.61
Exercised (in dollars per share)	64.48
Forfeited or expired (in dollars per share)	85.37
Outstanding balance at end of period (in dollars per share)	75.64	$ 73.70
Exercisable balance at end of period (in dollars per share)	$ 73.58
Weighted-Average Remaining Contractual Term
Outstanding , Weighted-Average Remaining Contractual Term	6 years 4 days
Exercisable, Weighted-Average Remaining Contractual Term	4 years 9 months 11 days
Aggregate Intrinsic Value
Outstanding at end of period (in dollars)	$ 7
Exercisable at end of period (in dollars)	7
Unrecognized Compensation Cost
Total unrecognized compensation related to non-vested awards (in dollars)	$ 17
Period of recognition of total unrecognized compensation related to non-vested shares	2 years
Restricted stock units
Unrecognized Compensation Cost
Total unrecognized compensation related to non-vested awards (in dollars)	$ 41
Period of recognition of total unrecognized compensation related to non-vested shares	2 years
Weighted-Average Grant-Date Fair Value
Restricted stock units outstanding at beginning of period (in dollars per share)	$ 74.49
Granted (in dollars per share)	81.97	79.26	$ 74.40
Vested/issued (in dollars per share)	72.07
Forfeited/cancelled (in dollars per share)	70.32
Restricted stock units outstanding at end of period (in dollars per share)	$ 79.16	$ 74.49
Restricted Stock Units, Additional Activity Information
Common shares issued, net of common shares withheld to cover taxes	499,961
Common shares issued, net of common shares withheld to cover taxes, weighted-average fair value (in dollars per share)	$ 81.83
Total fair value of restricted stock units vested (in dollars)	$ 20
Performance-based restricted stock units
Restricted Stock Units
Forfeited/cancelled (in shares)	(205,351)
Equity Incentive Plan and 2009 EIP | Stock option awards
Additional disclosures
Expiration period of award	10 years
Equity Incentive Plan and 2009 EIP | Stock option awards | Minimum
Additional disclosures
Vesting period	1 year
Equity Incentive Plan and 2009 EIP | Stock option awards | Maximum
Additional disclosures
Vesting period	3 years
Equity Incentive Plan and 2009 EIP | Restricted stock units | Minimum
Additional disclosures
Vesting period	1 year
Equity Incentive Plan and 2009 EIP | Restricted stock units | Maximum
Additional disclosures
Vesting period	5 years
2009 EIP
Common Shares Reserved for Share-Based Awards
Common shares reserved for grant of stock options, stock awards and other awards	10,000,000
Common shares available for future grants	2,385,479
2007 Directors' Plan
Common Shares Reserved for Share-Based Awards
Common shares reserved for grant of stock options, stock awards and other awards	600,000
Common shares available for future grants	235,321
2007 Directors' Plan | Stock option awards
Additional disclosures
Expiration period of award	10 years

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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