Share repurchases Share Repurchases (Tables)

9 Months Ended

Sep. 30, 2020

Treasury Stock, Value [Abstract]

Class of Treasury Stock [Table Text Block]

The following table summarizes the Company's common stock repurchases during the three and nine months ended September 30, 2020 and 2019:

	Three months ended September 30,				Nine months ended September 30,
	2020		2019		2020		2019
Open market repurchases:
Shares	250		8,790		4,302		10,850
Amount paid	$	21,259	$	514,082	$	324,398	$	626,271
Average paid per share	$	85.04	$	58.49	$	75.40	$	57.72
Tender Offer(1):
Shares	7,982		21,802		7,982		21,802
Amount paid	$	704,180	$	1,233,886	$	704,180	$	1,233,886
Average paid per share	$	88.22	$	56.60	$	88.22	$	56.60
Total :
Shares	8,232		30,592		12,284		32,652
Amount paid	$	725,439	$	1,747,968	$	1,028,578	$	1,860,157
Average paid per share	$	88.13	$	57.14	$	83.73	$	56.97