SHARE CAPITAL (Tables)

12 Months Ended

Dec. 31, 2020

SHARE CAPITAL.

Schedule of share repurchase activities

($ millions, except as noted)		2020	2019
Share repurchase activities (thousands of common shares)
	Shares repurchased	7 527	55 298
Amounts charged to
	Share capital	124	905
	Retained earnings	183	1 369
Share repurchase cost		307	2 274
Average repurchase cost per share		40.83	41.12

Schedule of liability for share repurchases

($ millions)		December 31 2020	December 31 2019
Amounts charged to
	Share capital	—	65
	Retained earnings	—	103
Liability for share purchase commitment		—	168