FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value (Details) - Recurring - USD ($) $ in Millions	Nov. 30, 2019	Feb. 23, 2019
Assets:
Short-term investments	$ 11.7	$ 23.1
Non-current investments	86.9	84.2
Total	98.6	596.3
Liabilities:
Derivative contracts	56.7	21.1
Total	56.7	21.1
Quoted prices in active markets for identical assets (Level 1)
Assets:
Short-term investments	9.2	21.0
Non-current investments	31.3	30.5
Total	40.5	540.5
Liabilities:
Derivative contracts	0.0	0.0
Total	0.0	0.0
Significant observable inputs (Level 2)
Assets:
Short-term investments	2.5	2.1
Non-current investments	55.6	53.7
Total	58.1	55.8
Liabilities:
Derivative contracts	56.7	21.1
Total	56.7	21.1
Significant unobservable inputs (Level 3)
Assets:
Short-term investments	0.0	0.0
Non-current investments	0.0	0.0
Total	0.0	0.0
Liabilities:
Derivative contracts	0.0	0.0
Total	$ 0.0	0.0
Money market
Assets:
Money market		489.0
Money market | Quoted prices in active markets for identical assets (Level 1)
Assets:
Money market		489.0
Money market | Significant observable inputs (Level 2)
Assets:
Money market		0.0
Money market | Significant unobservable inputs (Level 3)
Assets:
Money market		$ 0.0