Financial Instruments	6 Months Ended
Jun. 30, 2020
Financial Instruments
Financial Instruments	(11) Financial Instruments The carrying values of accounts receivable and accounts payable at December 31, 2019 and June 30, 2020 approximated market values because of their short-term nature. The carrying values of the amounts outstanding under the Credit Facility at December 31, 2019 and June 30, 2020 approximated fair value because the variable interest rates are reflective of current market conditions. Based on Level 2 market data inputs, the fair value of senior notes was approximately $2.8 billion and $1.8 billion at December 31, 2019 and June 30, 2020, respectively. See Note 12—Derivative Instruments to the unaudited condensed consolidated financial statements for information regarding the fair value of derivative financial instruments.

The entire disclosure for financial instruments. This disclosure includes, but is not limited to, fair value measurements of short and long term marketable securities, international currencies forward contracts, and auction rate securities. Financial instruments may include hedging and non-hedging currency exchange instruments, derivatives, securitizations and securities available for sale at fair value. Also included are investment results, realized and unrealized gains and losses as well as impairments and risk management disclosures.

No definition available.

Name:	us-gaap_FinancialInstrumentsDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration