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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income (loss)	$ 1,757.4	$ 1,428.5	$ 1,444.1
Subtract:
Net income (losses) attributable to noncontrolling interest	46.8	32.7	49.9
Total	$ 1,710.6	$ 1,395.8	$ 1,394.2
Weighted-average shares outstanding:
Basic	269.0	274.7	278.6
Dilutive effects:
Diluted	272.9	276.6	281.0
Net income (loss) per common share:
Basic	$ 6.36	$ 5.08	$ 5.00
Diluted	$ 6.27	$ 5.05	$ 4.96
Nonqualified Stock Options
Dilutive effects:
Stock-based compensation awards	1.3	0.3	0.9
Restricted Stock Units
Dilutive effects:
Stock-based compensation awards	2.1	1.5	1.4
Performance Share Awards
Dilutive effects:
Stock-based compensation awards	0.5	0.1	0.1

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