Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Debt Maturing within One Year

Debt maturing within one year:

(in Millions)	March 31, 2018		December 31, 2017
Short-term foreign debt (1)	$	43.8	$	91.4
Commercial paper (2)	184.4		—
Total short-term debt	$	228.2	$	91.4
Current portion of long-term debt	100.7		101.2
Short-term debt and current portion of long-term debt	$	328.9	$	192.6

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(1) At March 31, 2018, the average interest rate on the borrowings was 7.9%.

(2) At March 31, 2018, the average effective interest rate on the borrowings was 2.5%.

Schedule of long-term debt

Long-term debt:

(in Millions)	March 31, 2018
	Interest Rate Percentage	Maturity Date	March 31, 2018			December 31, 2017
Pollution control and industrial revenue bonds (less unamortized discounts of $0.2 and $0.2, respectively)	1.9 - 6.5%	2021 - 2032	$	51.6		$	51.6
Senior notes (less unamortized discount of $1.0 and $1.1, respectively)	3.95 - 5.2%	2019 - 2024	999.0			998.9
2014 Term Loan Facility	3.1%	2020	450.0			450.0
2017 Term Loan Facility	3.1%	2022	1,500.0			1,500.0
Revolving Credit Facility (1)	4.4%	2022	—			—
Foreign debt	0 - 10.8%	2018 - 2024	105.6			106.9
Debt issuance cost			(12.3		)	(13.2		)
Total long-term debt			$	3,093.9		$	3,094.2
Less: debt maturing within one year			100.7			101.2
Total long-term debt, less current portion			$	2,993.2		$	2,993.0

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(1) Letters of credit outstanding under our Revolving Credit Facility totaled $157.5 million and available funds under this facility were $1,158.0 million at March 31, 2018.