Share-Based Compensation Plans - Activity - RSU, PSU, DSU (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Weighted-Average Grant Date Fair Value Per Share
Target shares (shares)	2,300,000
Restricted Stock Units
Shares (in thousands)
Nonvested, beginning balance (shares)	309,300
Granted (shares)	195,200
Forfeited or expired (shares)	(43,400)
Vested (shares)	(140,900)
Nonvested, ending balance (shares)	320,200	309,300
Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning balance (in dollars per share)	$ 67.25
Granted (in dollars per share)	65.77	$ 64.30	$ 78.35
Forfeited or expired (in dollars per share)	65.32
Vested (in dollars per share)	68.88
Nonvested, ending balance (in dollars per share)	$ 65.89	$ 67.25
Performance Shares Units PSU
Shares (in thousands)
Nonvested, beginning balance (shares)	726,000.0
Granted (shares)	235,400
Forfeited or expired (shares)	(91,400)
Vested (shares)	(171,500)
Nonvested, ending balance (shares)	698,500	726,000.0
Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning balance (in dollars per share)	$ 76.66
Granted (in dollars per share)	69.10
Forfeited or expired (in dollars per share)	80.20
Vested (in dollars per share)	82.75
Nonvested, ending balance (in dollars per share)	$ 72.15	$ 76.66
Expired, shares	31,400
Expired (dollars per share)	$ 94.52
Actual shares earned and distributed (shares)		208,100
Target shares (shares)		171,500
Deferred Stock Units
Shares (in thousands)
Nonvested, beginning balance (shares)	19,700
Granted (shares)	19,200
Forfeited or expired (shares)	0
Vested (shares)	(19,700)
Nonvested, ending balance (shares)	19,200	19,700
Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning balance (in dollars per share)	$ 54.74
Granted (in dollars per share)	62.43
Forfeited or expired (in dollars per share)	0
Vested (in dollars per share)	54.74
Nonvested, ending balance (in dollars per share)	$ 62.43	$ 54.74