Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Information [Abstract]
Interest, Net of Capitalized Interest	$ 205,447	$ 186,546	$ 243,279
Income Taxes, Net of Refunds Received	(205,795)	(291,849)	75,634
Accrued Capital Expenditures	414,000	612,000	592,000
Non-cash investing and financing activities from property exchanges.	212,000	$ 150,000	362,000
Non-cash investing activities from other, property, plant and equipment	174,000		$ 49,000
Aggregate annual maturity of long-term debt (excluding capital lease obligations) in 2024	$ 0

The increase during the period in non-cash investing and financing activities from property exchanges.

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- Definition

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

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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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- Definition

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.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

The amount of fixed assets that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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No definition available.

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