Debt Instrument, Redemption Price, if Change of Control Repurchase Event Occurs, Percentage

No definition available.

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- Definition

Limitation on Secured Debt, Percent of Consolidated Assets

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No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

The average effective interest rate during the reporting period.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount of the required periodic payments applied to principal.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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- Definition

Weighted average interest rate of debt outstanding.

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No definition available.

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- Definition

Gross amount of debt extinguished.

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No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, classified as current.

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Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Long-Term Debt (Interest Rates And Due Dates) (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2019	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Balance		$ 1,900,200,000		$ 1,900,200,000	$ 2,117,600,000
Finance leases (primarily vehicles)		3,600,000		3,600,000	4,200,000
Unamortized discounts and deferred loan cost		(12,700,000)		(12,700,000)	(14,900,000)
Less: current maturities		50,900,000		50,900,000	51,100,000
Total long-term debt		$ 1,849,300,000		$ 1,849,300,000	$ 2,066,500,000
Term notes
Debt Instrument [Line Items]
Redemption price, percent				100.00%
Long-term debt, term		90 days		90 days
Redemption price, if change of control repurchase event occurs, percent				101.00%
Limitation on secured debt, percent				15.00%
Industrial development bonds, principally variable interest rates
Debt Instrument [Line Items]
Year-end Interest Rate		0.30%		0.30%	1.60%
Balance		$ 3,800,000		$ 3,800,000	$ 3,800,000
Commercial paper
Debt Instrument [Line Items]
Year-end Interest Rate		0.00%		0.00%	2.00%
Balance		$ 0		$ 0	$ 61,500,000
Other, partially secured
Debt Instrument [Line Items]
Balance		$ 500,000		$ 500,000	$ 500,000
Net commercial paper
Debt Instrument [Line Items]
Weighted average interest rate		2.00%		2.00%	2.60%
Senior Notes, Due 2022 \| Term notes
Debt Instrument [Line Items]
Year-end Interest Rate		3.40%		3.40%	3.40%
Balance		$ 300,000,000.0		$ 300,000,000.0	$ 300,000,000.0
Senior Notes, Due 2024 \| Term notes
Debt Instrument [Line Items]
Year-end Interest Rate		3.80%		3.80%	3.80%
Balance		$ 300,000,000.0		$ 300,000,000.0	$ 300,000,000.0
Senior Notes, Due 2027 \| Term notes
Debt Instrument [Line Items]
Year-end Interest Rate		3.50%		3.50%	3.50%
Balance		$ 500,000,000.0		$ 500,000,000.0	$ 500,000,000.0
Senior Notes, Due 2029 \| Term notes
Debt Instrument [Line Items]
Year-end Interest Rate		4.40%		4.40%	4.40%
Balance		$ 500,000,000.0		$ 500,000,000.0	$ 500,000,000.0
Term Loan, Due 2024 \| Term Loan
Debt Instrument [Line Items]
Year-end Interest Rate		3.00%		3.00%
Balance		$ 305,000,000.0		$ 305,000,000.0	$ 462,500,000
Variable interest rate					2.90%
Debt instrument amount issued	$ 500,000,000.0
Quarterly principal payment	$ 12,500,000
Maturities (term)	5 years
Repayments of debt				$ 195,000,000.0
Payment		$ 47,500,000	$ 60,000,000.0