EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jul. 01, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 8,855.2	$ 9,317.7	$ 367.1
Total other comprehensive (loss) income, net of tax	(217.5)	148.4	244.0
Ending balance	4,593.4	8,855.2	9,317.7
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	158.8	4.4	(239.7)
Other comprehensive income before reclassifications	(202.6)	155.2
Less: Net amounts reclassified from AOCI/(L)	(15.0)	(7.3)
Total other comprehensive (loss) income, net of tax	(217.6)	147.9	244.1
Ending balance	(58.8)	158.8	4.4
(Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	31.7	12.6
Other comprehensive income before reclassifications	(35.5)	19.2
Less: Net amounts reclassified from AOCI/(L)	(9.5)	(4.0)
Total other comprehensive (loss) income, net of tax	(45.0)	15.2
Ending balance	(13.3)	31.7	12.6
(Losses) Gains on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	115.0	(23.7)
Other comprehensive income before reclassifications	99.8	138.7
Less: Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive (loss) income, net of tax	99.8	138.7
Ending balance	214.8	115.0	(23.7)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(44.3)	(20.8)
Other comprehensive income before reclassifications	(213.1)	(23.5)
Less: Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive (loss) income, net of tax	(213.1)	(23.5)
Ending balance	(257.4)	(44.3)	(20.8)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	56.4	36.3
Other comprehensive income before reclassifications	(53.8)	20.8
Less: Net amounts reclassified from AOCI/(L)	(5.5)	(3.3)
Total other comprehensive (loss) income, net of tax	(59.3)	17.5
Ending balance	(2.9)	56.4	$ 36.3
Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Less: Net amounts reclassified from AOCI/(L)	7.0	5.2
Amortization of actuarial gains (losses), tax	$ 1.5	$ 1.9
Accounting Standards Update 2018-02 | Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Adjustment due to the adoption of ASU 2018-02				$ 6.5
Accounting Standards Update 2018-02 | (Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Adjustment due to the adoption of ASU 2018-02				3.9
Accounting Standards Update 2018-02 | (Losses) Gains on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Adjustment due to the adoption of ASU 2018-02				0.0
Accounting Standards Update 2018-02 | Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Adjustment due to the adoption of ASU 2018-02				0.0
Accounting Standards Update 2018-02 | Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Adjustment due to the adoption of ASU 2018-02				$ 2.6