Share-Based Compensation Plans - Restricted share unit activity (Details) - Restricted share units - $ / shares shares in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Non-vested share awards (in shares)
Non-vested at beginning of period (in shares)	3,075	3,309	3,309
Granted (in shares)	1,058	1,164
Vested (in shares)	(1,067)	(1,147)
Forfeited (in shares)	(152)	(166)
Non-vested at end of period (in shares)	2,914	3,160	3,075
Weighted Average Fair value
Non-vested at beginning of period (in dollars per share)	$ 203	$ 163	$ 163
Granted (in dollars per share)	278	250
Vested (in dollars per share)	186	151
Forfeited (in dollars per share)	218	176
Non-vested at end of period (in dollars per share)	$ 235	$ 199	$ 203