CAPITAL STRUCTURE FINANCIAL POLICIES - (Tables)

12 Months Ended

Dec. 31, 2020

CAPITAL STRUCTURE FINANCIAL POLICIES

Schedule of components of ratios

($ millions)			Capital Measure Target	December 31 2020	December 31 2019
Components of ratios
	Short-term debt			3 566	2 155
	Current portion of long-term debt			1 413	—
	Current portion of long-term lease liabilities			272	310
	Long-term debt			13 812	12 884
	Long-term lease liabilities			2 636	2 621
		Total debt		21 699	17 970
	Less: Cash and cash equivalents			1 885	1 960
		Net debt		19 814	16 010
	Shareholders' equity			35 757	42 042
	Total capitalization (total debt plus shareholders' equity)			57 456	60 012
	Funds from operations(1)			3 876	10 818
Net debt to funds from operations			<3.0 times	5.1	1.5
Total debt to total debt plus shareholders' equity			20% – 35%	37.8%	29.9%

(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.