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Financial Instruments and Risk Concentration (Tables) | 12 Months Ended
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Dec. 31, 2016
Risks And Uncertainties [Abstract] |
Details on Accounts Receivable Allowances | Details of these accounts receivable allowances are as follows:
| 2016 |  |  | 2015 |  |  | 2014 |
Balance, January 1 | $ |  | 7 |  |  | $ |  | 12 |  |  | $ |  | 22 |
Additions charged (credited) to operating results |  |  | 10 |  |  |  |  | (5 | ) |  |  |  | (9 | )
Recoveries and write-offs, net |  |  | — |  |  |  |  | — |  |  |  |  | (1 | )
Balance, December 31 | $ |  | 17 |  |  | $ |  | 7 |  |  | $ |  | 12 |

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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