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Principal Accounting Policies and Related Financial Information - Adjusted Changes in Equity to Apply Adopted Guidance (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | $ 3,400.9 | $ 3,143.7 | $ 3,084.2 | $ 2,665.6
Accumulated other comprehensive income (loss) | (459.6) | (325.5) |  |
Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 5,555.9 | 5,092.9 | 4,604.9 | 4,286.4
Accumulated Other Comprehensive Income (Loss) |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | (459.6) | (325.5) | (280.7) | (405.4)
Accumulated other comprehensive income (loss) | (459.6) |  |  |
Previously Reported |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 3,309.1 | 3,051.9 | 2,984.2 | 2,561.4
Accumulated other comprehensive income (loss) | (444.0) | (315.7) |  |
Previously Reported | Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | 4,991.3 | 4,506.4 | 4,188.8
Previously Reported | Accumulated Other Comprehensive Income (Loss) |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | (315.7) | (282.2) | (412.0)
Effect of Change |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 91.8 |  |  |
Accumulated other comprehensive income (loss) | (15.6) |  |  |
Effect of Change | Combined Effect of Changes |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 91.8 | 91.8 | 100.0 | 104.2
Accumulated other comprehensive income (loss) |  | (9.8) |  |
Effect of Change | Combined Effect of Changes | Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 107.4 | 101.6 | 98.5 | 97.6
Effect of Change | Combined Effect of Changes | Accumulated Other Comprehensive Income (Loss) |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | (15.6) | (9.8) | 1.5 | 6.6
Effect of Change | Effect of FIFO Change |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | 91.8 | 100.0 | 104.2
Accumulated other comprehensive income (loss) |  | 0.0 |  |
Effect of Change | Effect of FIFO Change | Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | 91.8 | 100.0 | 104.2
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
Effect of Change | Effect of Pension Change |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | 0.0 | 0.0 | 0.0
Accumulated other comprehensive income (loss) |  | (9.8) |  |
Effect of Change | Effect of Pension Change | Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | 9.8 | (1.5) | (6.6)
Effect of Change | Effect of Pension Change | Accumulated Other Comprehensive Income (Loss) |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity |  | $ (9.8) | $ 1.5 | $ 6.6
Effect of Change | As computed under LIFO and Pension deferred MRVA Method |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 3,309.1 |  |  |
Effect of Change | As computed under LIFO and Pension deferred MRVA Method | Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | 5,448.5 |  |  |
Effect of Change | As computed under LIFO and Pension deferred MRVA Method | Accumulated Other Comprehensive Income (Loss) |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total equity | $ (444.0) |  |  |

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