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Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Allowance for Doubtful Accounts [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance beginning of year | $ 159 | $ 125 | $ 132
Additions (Deductions) charged to costs and expenses | 52 | 77 | 31
Charge off's and other | (2) | (43) | (38)
Balance end of year | 209 | 159 | 125
Reserve for Excess and Obsolete Inventories [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance beginning of year | 500 | 370 | 396
Additions (Deductions) charged to costs and expenses | 606 | 186 | 128
Charge off's and other | (89) | (56) | (154)
Balance end of year | 1,017 | 500 | 370
Valuation Allowance for Deferred Tax Assets [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance beginning of year | 63 | 48 | 133
Additions (Deductions) charged to costs and expenses | 476 | 15 | (83)
Charge off's and other | 5 |  | (2)
Balance end of year | 544 | 63 | 48
Warranty Reserve [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance beginning of year | 244 | 272 | 228
Additions (Deductions) charged to costs and expenses | 50 | 92 | 123
Charge off's and other | (122) | (120) | (79)
Balance end of year | $ 172 | $ 244 | $ 272

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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