EQUITY (Distributions) (Detail) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Dec. 11, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Dividends Payable [Line Items]
Payments of ordinary dividends, common stock		$ 1,603.0	$ 1,323.5	$ 1,073.0
Preferred stock dividends declared			$ 18.9	$ 91.4
Dividends per depository share, percentage		0.1
Common Stock
Dividends Payable [Line Items]
Common stock, dividends declared per share (in dollars per share)	$ 1.01	$ 3.7800	$ 3.1500	$ 2.6200
Dividends declared, common stock, percent of total		100.00%	100.00%	100.00%
Common Stock | Ordinary Income
Dividends Payable [Line Items]
Common stock, dividends declared per share (in dollars per share)		$ 3.7800	$ 3.1500	$ 2.6200
Dividends declared, common stock, percent of total		100.00%	100.00%	100.00%
Common Stock | Dividends Declared and Paid
Dividends Payable [Line Items]
Common stock, dividends declared per share (in dollars per share)		$ 3.78	$ 3.15	$ 2.62
Payments of ordinary dividends, common stock		$ 1,672.8	$ 1,389.8	$ 1,122.5
Series A Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption
Dividends Payable [Line Items]
Preferred stock, dividends per share, declared (in dollars per share)				$ 3.3643
Dividends declared, preferred stock, declared				100.00%
Series A Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption | Ordinary Income
Dividends Payable [Line Items]
Preferred stock, dividends per share, declared (in dollars per share)				$ 3.3643
Dividends declared, preferred stock, declared				100.00%
Series A Preferred Stock | Dividends Declared and Paid | Convertible Preferred Stock Subject to Mandatory Redemption
Dividends Payable [Line Items]
Preferred stock, dividends per share, declared (in dollars per share)		$ 0	$ 0	$ 2.63
Preferred stock dividends declared		$ 0.0	$ 0.0	$ 15.8
Series B Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption
Dividends Payable [Line Items]
Preferred stock, dividends per share, declared (in dollars per share)			$ 2.1314	$ 6.5233
Dividends declared, preferred stock, declared			100.00%	100.00%
Series B Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption | Ordinary Income
Dividends Payable [Line Items]
Preferred stock, dividends per share, declared (in dollars per share)			$ 2.1314	$ 6.5233
Dividends declared, preferred stock, declared			100.00%	100.00%
Series B Preferred Stock | Dividends Declared and Paid | Convertible Preferred Stock Subject to Mandatory Redemption
Dividends Payable [Line Items]
Preferred stock, dividends per share, declared (in dollars per share)		$ 0	$ 13.75	$ 55.00
Preferred stock dividends declared		$ 0.0	$ 18.9	$ 75.6
Preferred stock | Series A Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption
Dividends Payable [Line Items]
Preferred stock, dividend rate, percentage				5.25%
Preferred stock, par value (in dollars per share)				$ 0.01
Preferred stock | Series B Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption
Dividends Payable [Line Items]
Preferred stock, dividend rate, percentage			5.50%
Preferred stock, par value (in dollars per share)			$ 0.01