Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Summary of Information Related to Common Share Balances

The following table summarizes information related to Common Share balances as at December 31:

(number of shares in millions)	2020	2019	2018
Share capital, January 1	137.0	140.5	144.9
CP Common Shares repurchased	(4.0)	(3.8)	(4.6)
Shares issued under stock option plan	0.3	0.3	0.2
Share capital, December 31	133.3	137.0	140.5

Activities Under the Share Repurchase Programs

The following table provides activities under the share repurchase programs for each of the years ended December 31:

	2020		2019		2018
Number of Common Shares repurchased(1)	3,973,076		3,794,149		4,683,162
Weighted-average price per share(2)	$	371.74	$	300.65	$	240.68
Amount of repurchase (in millions)(2)	$	1,477	$	1,141	$	1,127

(1) Includes shares repurchased but not yet cancelled at year end.

(2) Includes brokerage fees.