XML 136 R20.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Miscellaneous financial information | 12 Months Ended
--- | ---
Dec. 31, 2014
Miscellaneous financial information | 11. Miscellaneous financial information In 2014, net income included an after-tax gain of $29 million (2013 – $24 million gain, 2012 – $45 million gain) attributable to the effect of changes in last-in, first-out (LIFO) inventories. The replacement cost of inventories was estimated to exceed their LIFO carrying values at December 31, 2014 by $857 million (2013 – $1,787 million). Inventories of crude oil and products at year-end consisted of the following:
millions of dollars |  | 2014 |  |  | 2013 |
Crude oil |  |  | 650 |  |  |  | 628 |
Petroleum products |  |  | 409 |  |  |  | 340 |
Chemical products |  |  | 53 |  |  |  | 54 |
Natural gas and other |  |  | 9 |  |  |  | 8 |
Total inventories of crude oil and products |  |  | 1,121 |  |  |  | 1,030 |
Net research and development costs charged to expenses in 2014 were $128 million (2013 – $154 million, 2012 – $147 million). These costs are included in expenses due to the uncertainty of future benefits. Accounts payable and accrued liabilities included accrued taxes other than income taxes of $408 million at December 31, 2014 (2013 – $380 million).

X
- Definition The entire disclosures of supplemental information, including descriptions and amounts, related to the balance sheet, income statement, and/or cash flow statement. + References No definition available. + Details
Name: | us-gaap_AdditionalFinancialInformationDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration