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STOCKHOLDERS' EQUITY - Schedule of Share Repurchase Activities (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity, Class of Treasury Stock [Line Items]
Value of shares repurchased		$ 100.0
Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)		0.2
Common Stock | Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)	0.0	0.2
Average price per share (in dollars per share)	$ 0	$ 521.8
Value of shares repurchased	$ 0.0	$ 100.0

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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