Other Noncurrent Assets (Tables)

12 Months Ended

Dec. 31, 2014

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

Schedule of Other Noncurrent Assets

December 31,	2014		2013
Intangibles, net (E)	$	737	$	399
Cash surrender value of life insurance		506		507
Prepaid gas transmission contract (N)		295		315
Value-added tax receivable		294		339
Deferred mining costs, net		209		219
Fair value of derivative contracts (X)		163		220
Advance related to European Commission Matter in Italy (N)		111		126
Unamortized debt expense		65		73
Prepaid pension benefit (W)		53		88
Other		326		342
	$	2,759	$	2,628