Income Taxes - Differences in year-over-year earnings from continuing operations (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Energy & Chemicals \| U.S.
Income Tax Contingency [Line Items]
Effect of forecast revision on estimated project cost	$ 265

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.

No definition available.

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