Other Noncurrent Assets (Tables)

12 Months Ended

Dec. 31, 2015

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Noncurrent Assets

December 31,	Note		2015		2014
Gas supply prepayment		N	$	288	$	—
Prepaid gas transmission contract		N		268		295
Value-added tax receivable				233		294
Deferred mining costs, net				203		209
Intangibles, net		E		53		70
Prepaid pension benefit		W		35		35
Advance related to European Commission Matter in Italy		N		—		111
Other				167		275
			$	1,247	$	1,289