Financial Information and Accounting Policies - Adjusted Changes in Equity to Apply Adopted Guidance (Details) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	$ 3,203.6	$ 3,219.1	$ 3,174.0	$ 3,143.7	$ 3,154.0	$ 3,232.1	$ 3,130.3	$ 2,984.2
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	5,354.8	5,300.7	5,233.4	5,092.9	4,968.9	4,870.1	4,727.4	4,506.4
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	(542.0)	(470.2)	(445.4)	(325.5)	(291.2)	(308.7)	(284.2)	(282.2)
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	3,111.8	3,127.3	3,082.2	3,051.9	3,057.0	3,134.1	3,031.3	2,984.2
As Previously Reported | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	5,248.8	5,199.1	5,131.8	4,991.3	4,864.9	4,767.9	4,627.0	4,506.4
As Previously Reported | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	(527.8)	(460.4)	(435.6)	(315.7)	(284.2)	(304.5)	(282.8)	(282.2)
Effect of Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	91.8
Effect of Change | Combined Effect of Changes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity		91.8	91.8	91.8	97.0	98.0	99.0	100.0
Effect of Change | Combined Effect of Changes | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity		101.6	101.6	101.6	104.0	102.2	100.4	98.5
Effect of Change | Combined Effect of Changes | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity		(9.8)	(9.8)	(9.8)	(7.0)	(4.2)	(1.4)	1.5
Effect of Change | Effect of FIFO Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity		91.8	91.8	91.8	97.0	98.0	99.0	100.0
Effect of Change | Effect of FIFO Change | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity		91.8	91.8	91.8	97.0	98.0	99.0	100.0
Effect of Change | Effect of FIFO Change | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity		0.0	0.0	0.0	0.0	0.0	0.0	0.0
Effect of Change | Effect of Pension Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	91.8	0.0	0.0	0.0	0.0	0.0	0.0	0.0
Effect of Change | Effect of Pension Change | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	106.0	9.8	9.8	9.8	7.0	4.2	1.4	(1.5)
Effect of Change | Effect of Pension Change | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	$ (14.2)	$ (9.8)	$ (9.8)	$ (9.8)	$ (7.0)	$ (4.2)	$ (1.4)	$ 1.5