Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net income (loss)	$ 1,250.1	$ 1,311.6	$ 1,509.3	$ 4,788.7
Subtract:
Net income (loss) attributable to noncontrolling interest	3.9	(4.1)	14.4	15.6
Total net income (loss), basic	1,246.2	1,315.7	1,494.9	4,773.1
Total net income (loss), diluted	$ 1,246.2	$ 1,315.7	$ 1,494.9	$ 4,773.1
Weighted-average shares outstanding:
Basic	241.1	248.0	242.4	253.3
Dilutive effects:
Diluted	244.3	251.9	245.7	257.3
Net income (loss) per common share:
Basic	$ 5.17	$ 5.31	$ 6.17	$ 18.84
Diluted	$ 5.10	$ 5.22	$ 6.08	$ 18.55
Nonqualified Stock Options
Dilutive effects:
Stock-based compensation awards	0.9	1.4	0.9	1.5
Restricted Stock Units
Dilutive effects:
Stock-based compensation awards	2.0	2.1	2.0	2.1
Performance Share Awards
Dilutive effects:
Stock-based compensation awards	0.3	0.4	0.4	0.4