Long-Term Debt and Commercial Paper (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Long-term debt

Long-term debt at December 31 consisted of the following:

Debt Description	Maturity Date	Interest Payable	2017			2016
6.75% Senior Notes	April 15, 2018	April 15 and October 15	$	400.0		$	400.0
5.5% Senior Notes	February 1, 2020	February 1 and August 1	350.0			350.0
3.35% Senior Notes	January 15, 2021	January 15 and July 15	300.0			300.0
3.5% Senior Notes	November 15, 2024	May 15 and November 15	450.0			—
4.5% Senior Notes	October 1, 2025	April 1 and October 1	450.0			450.0
3.8% Senior Notes	November 15, 2027	May 15 and November 15	300.0			—
Revolving credit facility	October 19, 2022	Monthly	—			—
Mortgage facility	November 30, 2017	Monthly	—			153.2
Capital leases and other debt	Various dates through 2037	Monthly	139.4			136.2
			2,389.4			1,789.4
Less: unamortized debt discounts and debt issuance costs			(15.7		)	(10.8		)
Less: current maturities			(414.5		)	(167.5		)
Long-term debt, net of current maturities			$	1,959.2		$	1,611.1

Aggregate maturities of non-vehicle long-term debt

At December 31, 2017, aggregate maturities of non-vehicle long-term debt were as follows:

Year Ending December 31:
2018	$	414.5
2019	43.5
2020	354.1
2021	304.2
2022	4.5
Thereafter	1,268.6
	$	2,389.4