Common stock transactions (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Aug. 24, 2022	Aug. 31, 2023	Aug. 04, 2023	Jul. 29, 2022	Aug. 04, 2023	Jul. 29, 2022
Common stock transactions
Aggregate purchase price				$ 348,623		$ 1,095,396
Cash dividend paid (in dollars per share)			$ 0.59	$ 0.55	$ 1.18	$ 1.10
Subsequent event
Common stock transactions
Cash dividend declared (in dollars per share)		$ 0.59
Common Stock
Common stock transactions
Shares acquired under share repurchase program				1,494		4,886
Aggregate purchase price				$ 1,308		$ 4,276
Common Stock | Pursuant to Authorized Repurchase Program
Common stock transactions
Common stock repurchase program, increase in the authorized amount	$ 2,000,000
Common stock repurchase authorization	$ 16,000,000
Shares acquired under share repurchase program					0	4,900
Aggregate purchase price						$ 1,100,000