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Properties, Plants, and Equipment, Net - Schedule of Properties, Plants, and Equipment, Net (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Land and land rights, including mines | $ 639 | $ 676
Structures | 11,890 | 12,198
Machinery and equipment | 22,770 | 23,509
Properties, plants, and equipment, gross | 35,299 | 36,383
Less: accumulated depreciation, depletion, and amortization | 19,227 | 19,190
Properties, plants, and equipment excluding construction work-in-progress | 16,072 | 17,193
Construction work-in-progress | 1,567 | 1,754
Properties, plants, and equipment, net | 17,639 | 18,947
Global Rolled Products [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 1,256 | 1,232
Machinery and equipment | 5,374 | 5,174
Engineered Products and Solutions [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 693 | 678
Machinery and equipment | 2,481 | 2,415
Other [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 755 | 760
Machinery and equipment | 859 | 883
Alumina [Member] | Alumina Refining [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 3,049 | 3,319
Machinery and equipment | 4,685 | 5,279
Alumina [Member] | Bauxite Mining [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 1,591 | 1,563
Machinery and equipment | 596 | 650
Primary Metals [Member] | Aluminum Smelting [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 3,863 | 4,042
Machinery and equipment | 7,674 | 8,114
Primary Metals [Member] | Power Generation [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Structures | 683 | 604
Machinery and equipment | $ 1,101 | $ 994

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
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- Definition Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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