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Supplemental Financial Information (Other Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Supplemental Financial Information [Abstract]
Unrecognized tax benefits (inclusive of interest and penalties)	$ 234.5	$ 275.0
Pension and other post-retirement benefits	155.3	159.8
Noncurrent contract liabilities (deferred revenue)	43.3	41.0
Other	49.4	39.8
Other liabilities	$ 482.5	$ 515.6

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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