SHORT-TERM DEBT AND LINES OF CREDIT - SHORT-TERM BORROWINGS (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Short-term borrowings
Commercial paper outstanding	$ 202.0	$ 292.0
Commercial paper
Short-term borrowings
Commercial paper outstanding	$ 202.0	$ 292.0
Weighted-average interest rate on amounts outstanding	0.16%	0.21%
Average amount outstanding during the period	$ 254.1
Weighted-average interest rate during the period	0.17%

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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