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Condensed Consolidated Statements of Cash Flows (Parentheticals) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Cash Flows [Abstract]
Asset retirement obligation	$ 0.8	$ 2.7
Cash paid for interest, net of capitalized interest	60.1	78.2
Income taxes paid, net of refunds	65.2	39.3
Non-cash additions to property, plant and equipment	$ 15.0	$ 12.6

X

- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

+ References

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The increase (decrease) during the reporting period in the carrying amount of asset retirement obligations.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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