Debt	3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]
Debt	DebtWe repaid the $185 million principal balance of our 8.75% senior debentures when they matured in February 2021. Our 3.25% senior notes mature in November 2021. We expect to repay the $500 million principal amount due by the maturity date.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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