Stockholders' equity - Common stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended	12 Months Ended
	Feb. 28, 2023	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stockholders Equity Note [Line Items]
Cash dividends			$ 163,693	$ 142,290	$ 136,561
Common stock dividends per share cash paid			$ 2.20	$ 1.75	$ 1.60
Dividends Declared per Common Share		$ 0.55
Dividend payable, to be paid date			Jan. 03, 2023
Dividends payable, record date			Dec. 07, 2022
Dividends payable		$ 39,525	$ 39,525	$ 35,937	$ 33,700
Subsequent event
Stockholders Equity Note [Line Items]
Dividends Declared per Common Share	$ 0.55
Dividend payable, to be paid date	Apr. 03, 2023
Dividends payable, record date	Mar. 20, 2023