Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Long-Term Debt [Abstract]

Schedule Of Long-Term Debt

As at December 31	Note		2017		2016
U.S. Dollar Denominated Debt
Revolving credit and term loan borrowings	A	$	-	$	-
U.S. Unsecured Notes:	B
6.50% due May 15, 2019			500		500
3.90% due November 15, 2021			600		600
8.125% due September 15, 2030			300		300
7.20% due November 1, 2031			350		350
7.375% due November 1, 2031			500		500
6.50% due August 15, 2034			750		750
6.625% due August 15, 2037 (1)			462		462
6.50% due February 1, 2038 (1)			505		505
5.15% due November 15, 2041 (1)			244		244
Total Principal	F		4,211		4,211
Increase in Value of Debt Acquired	C		26		26
Unamortized Debt Discounts and Issuance Costs	D		(40)		(39)
Current Portion of Long-Term Debt	E		-		-
		$	4,197	$	4,198

Mandatory Debt Payments

		Principal		Interest
As at December 31		Amount		Amount
2018	$	-	$	267
2019		500		251
2020		-		234
2021		600		235
2022		-		211
Thereafter		3,111		2,546
Total	$	4,211	$	3,744