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Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Financial Instruments And Guarantees With Off Balance Sheet Risk Disclosure [Abstract]

Letters of credit, bank guarantees, surety bonds and corporate guarantees

As of December 31, 2016, the Company had the following financial instruments with off-balance-sheet risk:



	Reclamation Bonding Requirements				Coal Lease Obligations				Workers’ Compensation Obligations				Other⁽¹⁾				Total ⁽²⁾				Cash Collateral in Support of Financial Instruments
	(Dollars in millions)
Self bonding	$	1,094.2			$	—			$	—			$	—			$	1,094.2			$	—
Surety bonds ⁽³⁾	319.6				94.0				19.1				15.5				448.2				64.5
Bank guarantees	54.7				—				—				24.5				79.2				83.8
Other ⁽⁴⁾	233.2				—				42.7				118.0				393.9				233.2
Total	$	1,701.7			$	94.0			$	61.8			$	158.0			$	2,015.5			$	381.5


⁽¹⁾	Other includes the $37.0 million in letters of credit related to the PBGC, as described below, and an additional $121.0 million in bank guarantees, letters of credit and surety bonds related to road maintenance, performance guarantees and other operations.


⁽²⁾	Letters of credit held as collateral in support of surety bonds at December 31, 2016 were $48.0 million and are not reflected in the table above.


⁽³⁾	A total of $72.6 million of letters of credit issued as collateral to support surety bonds related to Patriot have been excluded from above as they no longer represent off-balance sheet obligations as discussed in Note 27. "Matters Related to the Bankruptcy of Patriot Coal Corporation".