DEBT (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The components of long-term debt were as follows: 

(Dollars in millions)	March 31, 2016			December 31, 2015
Principal Value:
4.900% Notes due 2019 (“2019 Notes”)	$	700.0		$	700.0
3.000% Notes due 2020 (“2020 Notes”)	750.0			750.0
4.125% Notes due 2025 (“2025 Notes”)	750.0			750.0
5.900% Notes due 2039 (“2039 Notes”)	300.0			300.0
4.600% Notes due 2044 (“2044 Notes”)	500.0			500.0
Sub-total	3,000.0			3,000.0
Adjustments to Principal Value:
Unamortized basis adjustment for settled interest rate swaps	6.6			7.0
Unamortized bond discount	(4.7		)	(4.8		)
Unamortized debt issuance costs	(21.1		)	(21.6		)
Fair-value interest rate swaps	31.8			0.4
Long-term debt	$	3,012.6		$	2,981.0

Interest Income and Interest Expense Disclosure

The components of interest expense-net were as follows: 

	Three Months Ended March 31,
(Dollars in millions)	2016			2015
Interest expense	$	29.0		$	16.4
Interest income	(2.8		)	(2.6		)
Interest expense-net	$	26.2		$	13.8