CAPITAL STOCK - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2018	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Jun. 30, 2019
Class of Stock [Line Items]
Options exercised under incentive plans (in shares)				11,300,000.0
Authorized amount of stock available for repurchase					$ 1,500,000,000
Shares repurchased (in shares)		0
Preferred stock, par value (in dollars per share)		$ 0.01		$ 0.01
Preferred stock, redemption price (in dollars per share)		$ 25.00
Public Offering
Class of Stock [Line Items]
Sale of stock, shares issued (in shares)		75,000,000.0
Proceeds from sale of stock		$ 730,500,000
Public Offering, Additional Share Purchase Option
Class of Stock [Line Items]
Sale of stock, shares issued (in shares)		11,300,000
Proceeds from sale of stock		$ 109,600,000
Option to purchase additional shares, period				30 days
At-the-market Sale Program
Class of Stock [Line Items]
Sale of stock, shares issued (in shares)		0	48,000,000.0
Proceeds from sale of stock			$ 489,000,000.0
Aggregate stock offering price	$ 1,500,000,000