4.625% Senior notes due 2020

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The percentage by which average market price exceeds the sum of the issue price, accrued original issue discount and contingent additional principal on the zero-coupon subordinated notes at which contingent cash interest becomes payable.

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
4.625% Senior notes due 2020					$ 597,000,000.0
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ 18,800,000		$ 22,800,000
Long-term Debt, Excluding Current Maturities	$ 6,101,300,000		6,101,300,000		5,990,900,000
Debt Instrument, Basis Spread on Variable Rate	2.298%
Fair Value Hedges, Net	$ 4,100,000		4,100,000		3,100,000
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 20,000,000.0		20,000,000.0		2,800,000
Minimum percentage of market price to calculated value of zero-coupon subordinated debt at which the entity is subject to contingent cash interest	120.00%
Embedded derivative, fair value	$ 0		0
Embedded derivative, impact on condensed consolidated statements of operations	0
Fair Value Hedge Liabilities					3,100,000
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	400,000	$ 6,100,000	7,200,000	$ (3,600,000)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	0	0	0
Fair Value Hedge Assets	4,100,000		4,100,000
Fair Value Hedge Liabilities					3,100,000
Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	18,800,000	(16,200,000)	22,800,000	8,100,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0	$ 0	0	$ 0
Fair Value Hedge Assets	20,000,000.0		20,000,000.0
Fair Value Hedge Liabilities					2,800,000
Senior notes due 2022 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt, Excluding Current Maturities	500,000,000.0		500,000,000.0		500,000,000.0
Foreign Currency Contract, Asset, Fair Value Disclosure	8,500,000		8,500,000
Foreign Currency Contracts, Liability, Fair Value Disclosure					1,000,000.0
Cross currency swap maturing 2022 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	300,000,000.0		300,000,000.0
Senior notes due 2025 [Member] [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 300,000,000.0		$ 300,000,000.0
Senior notes due 2020 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%		4.625%
Long-term Debt, Excluding Current Maturities	$ 604,100,000		$ 604,100,000		596,900,000
Senior Long Term Notes Due2020 Member
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt, Excluding Current Maturities	600,000,000.0		600,000,000.0		600,000,000.0
Senior notes due 2025 [Member] [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt, Excluding Current Maturities	1,000,000,000.0		1,000,000,000.0		1,000,000,000.0
Foreign Currency Contract, Asset, Fair Value Disclosure	11,500,000		11,500,000
Foreign Currency Contracts, Liability, Fair Value Disclosure					1,800,000
Senior notes due 2027 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt, Excluding Current Maturities	600,000,000.0		600,000,000.0		600,000,000.0
Fair Value, Inputs, Level 2 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value Hedges, Net	4,100,000		4,100,000		3,100,000
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 20,000,000.0		$ 20,000,000.0		$ 2,800,000