Supplemental Cash Flow Information (Details) - USD ($) $ in Millions |
6 Months Ended | |
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Jun. 30, 2018 |
Jun. 30, 2017 |
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| Supplemental Cash Flow Information [Abstract] | ||
| Cash paid during the period for interest, net of amounts capitalized | $ 282 | $ 264 |
| Contribution of Property | 0 | 14 |
| Balance in property, plant and equipment, net funded with accounts payable and accrued liabilities | $ 935 | $ 364 |
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- Definition Future cash outflow to pay for construction in progress expenditures that have occurred. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Value of property contributed in noncash investing and financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash paid, after deduction of cash paid for capitalized interest, for interest. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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