Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Activities Under Share Repurchase Program

The following table describes activities under the share repurchase program:

	For the three months ended March 31
	2019		2018
Number of Common Shares repurchased(1)	707,678		1,435,700
Weighted-average price per share(2)	$	261.73	$	221.76
Amount of repurchase (in millions)(2)	$	185	$	318

⁽¹⁾ Includes shares repurchased but not yet canceled at quarter end.

⁽²⁾ Includes brokerage fees.