Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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CAPITAL STOCK AND STOCK AWARD PLANS - Summary of Stock Options Grants by First Vesting Date (Details) - $ / shares		12 Months Ended
	Feb. 05, 2020	Dec. 31, 2019	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, net of forfeitures (in shares)		5,266,478
Weighted average grant date fair value (in dollars per share)		$ 14.73
Unvested options (in shares)		2,543,122
Weighted average exercise price (in dollars per share)		$ 82.46
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock award vesting period (in years)			5 years
First Vesting Date Dec 31 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, net of forfeitures (in shares)		1,421,432
Weighted average grant date fair value (in dollars per share)		$ 12.66
Unvested options (in shares)		280,033
First Vesting Date Dec 31 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, net of forfeitures (in shares)		1,238,090
Weighted average grant date fair value (in dollars per share)		$ 12.60
Unvested options (in shares)		484,683
First Vesting Date Dec 31 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, net of forfeitures (in shares)		1,447,294
Weighted average grant date fair value (in dollars per share)		$ 14.25
Unvested options (in shares)		855,028
First Vesting Date Dec 31 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, net of forfeitures (in shares)		1,159,662
Weighted average grant date fair value (in dollars per share)		$ 20.13
Unvested options (in shares)		923,378
First Vesting Date Dec 31 2020 \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, net of forfeitures (in shares)	1,660,548
Weighted average grant date fair value (in dollars per share)	$ 13.88
Weighted average exercise price (in dollars per share)	$ 72.74
First Vesting Date Dec 31 2020 \| Stock Options \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock award vesting period (in years)	5 years