Debt and Credit Arrangements (Tables)

6 Months Ended

Jun. 30, 2015

Debt Instruments [Abstract]

Summary of Carrying Amounts and Fair Values of Long-Term Debt

A summary of the carrying amounts and fair values of our long-term debt is listed below.

	Effective Interest Rate	June 30, 2015				December 31, 2014
		Book Value		Fair Value 1		Book Value		Fair Value 1
2.25% Senior Notes due 2017 (less unamortized discount of $0.3)	2.30%	$	299.7	$	303.2	$	299.6	$	301.2
4.00% Senior Notes due 2022 (less unamortized discount of $2.1)	4.13%	247.9		255.2		247.7		255.2
3.75% Senior Notes due 2023 (less unamortized discount of $1.2)	4.32%	498.8		495.8		498.8		499.8
4.20% Senior Notes due 2024 (less unamortized discount of $0.8)	4.24%	499.2		505.9		499.1		509.8
Other notes payable and capitalized leases		79.2		79.2		80.4		80.4
Total long-term debt		1,624.8				1,625.6
Less: current portion		2.0				2.1
Long-term debt, excluding current portion		$	1,622.8			$	1,623.5

1 See Note 11 for information on the fair value measurement of our long-term debt.