Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2019

Stockholders' Equity Note [Abstract]

Activities Under Share Repurchase Program

The following table describes activities under the share repurchase program:

	For the three months ended September 30				For the nine months ended September 30
	2019		2018		2019		2018
Number of Common Shares repurchased(1)	1,519,540		—		3,183,461		2,495,962
Weighted-average price per share(2)	$	310.36	$	—	$	299.09	$	223.97
Amount of repurchase (in millions)(2)	$	471	$	—	$	952	$	559

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

⁽²⁾ Includes brokerage fees.