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Capital Structure Financial Policies - (Tables)

12 Months Ended

Dec. 31, 2018

CAPITAL STRUCTURE FINANCIAL POLICIES

Schedule of components of ratios

($ millions)				Capital Measure Target		December 31, 2018		December 31, 2017
Components of ratios
	Short-term debt					3 231		2 136
	Current portion of long-term debt					229		71
	Long-term debt					13 890		13 372
		Total debt				17 350		15 579
	Less: Cash and cash equivalents					2 221		2 672
		Net debt				15 129		12 907
	Shareholders' equity					44 005		45 383
	Total capitalization (total debt plus shareholders' equity)					61 355		60 962
	Funds from operations(1)					10 172		9 139
Net debt to funds from operations				<3.0 times		1.5		1.4
Total debt to total debt plus shareholders' equity						28%		26%

(1) Funds from operations is calculated as cash flow from operating activities before changes in non-cash working capital, and is a non-GAAP financial measure.

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Disclosure of the capitalization of the entity comprised of its long-term debt and equity instruments and also the total debt plus shareholders equity.

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