XML 48 R28.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Receivables (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items] |
Allowance for Credit Losses on Financing Receivables [Table Text Block] | The following table presents a rollforward of our global allowance for bad debts for 2015, 2016 and 2017.
Millions of dollars | Balance at Beginning of Period | Charged to Costs and Expenses | Write-Offs | Balance at End of Period
Year ended December 31, 2015 | $ | 137 |  | $ | 44 |  | $ | (36 | ) | $ | 145 |
Year ended December 31, 2016 | 145 |  | 50 |  | (20 | ) | 175 |
Year ended December 31, 2017 | 175 |  | 568 |  | (18 | ) | 725 |

X
- 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=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration