Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Summary of Debt Instruments

Our debt consisted of the following (in millions):

As of December 31,	2014			2013
Long-term debt
Senior Notes due 2014	$	–		$	250.0
Senior Notes due 2019		500.0			500.0
Senior Notes due 2021		300.0			300.0
Senior Notes due 2039		500.0			500.0
Term Loan		98.0			112.4
Other long-term debt		4.9			2.1
Debt discount		(1.4	)		(1.5	)
Adjustment related to interest rate swaps		24.0			9.3
Total long-term debt	$	1,425.5		$	1,672.3