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Supplemental Financial Information (Other Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Supplemental Financial Information [Abstract] |  |  |
Liability, Defined Benefit Plan, Noncurrent | $ 204.0 | $ 186.1 | $ 296.6
Unrecognized tax benefits (inclusive of interest and penalties) | 320.2 |  | 286.1
Intangible Liabilities Noncurrent | 0.0 |  | 50.4
Customer Payable Amount - Long Term |  |  | 35.5
Operating Lease, Liability, Noncurrent | 12.5 |  | 21.6
Other Accrued Liabilities, Noncurrent | 56.9 |  | 93.8
Other Liabilities, Noncurrent | $ 581.1 | $ 565.4 | $ 762.4

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