Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of the Company's obligations and other indebtedness

The Company is obligated under notes and other indebtedness as follows (in millions):

	December 31,
	2017		2016
Accounts receivable securitization program	$	14.9	$	103.2
Revolving credit facilities	—		75.0
Senior notes	575.0		330.0
Other indebtedness, net of unamortized debt issuance costs	30.9		—
	620.8		508.2
Less current portion of debt	83.7		208.5
Long-term debt	$	537.1	$	299.7

Schedule of future principal payments of indebtedness

Future principal payments of indebtedness at December 31, 2017 are as follows (in millions):

2018	$	83.7
2019	3.6
2020	183.7
2021	0.7
2022	0.8
Thereafter	350.8
Total	$	623.3

Schedule of carrying and fair value of the Senior Notes

The carrying and estimated fair values of our fixed rate debt were as follows (in millions):

	December 31,
	2017				2016
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
2010 Senior notes—Series B	$	—	$	—	$	105.0	$	106.7
2010 Senior notes—Series C	65.0		65.7		65.0		67.5
2010 Senior notes—Series D	160.0		167.4		160.0		172.1
2017 Senior notes—Series A	35.0		34.6		—		—
2017 Senior notes—Series B	105.0		104.0		—		—
2017 Senior notes—Series D	105.0		104.5		—		—
2017 Senior notes—Series E	50.0		49.6		—		—
2017 Senior notes—Series F	55.0		54.1		—		—
U.K. mortgage	28.4		28.8		—		—
U.S. mortgage	4.4		4.4		—		—
Total	$	607.8	$	613.1	$	330.0	$	346.3