Debt Obligations	3 Months Ended
Mar. 31, 2020
Debt Obligations [Abstract]
Debt Obligations	DEBT OBLIGATIONS Parent Company Indebtedness ET Term Loan Facility On January 15, 2019, ET paid in full all outstanding borrowings under its senior secured term loan agreement and thereafter terminated the term loan agreement. In connection with the termination of the term loan agreement, the collateral securing certain series of the Partnership’s outstanding senior notes was released in accordance with the terms of the applicable indentures governing such senior notes. Subsidiary Indebtedness ETO January 2020 Senior Notes Offering and Redemption On January 22, 2020, ETO completed a registered offering (the “January 2020 Senior Notes Offering”) of $1.00 billion aggregate principal amount of the Partnership’s 2.900% Senior Notes due 2025, $1.50 billion aggregate principal amount of the Partnership’s 3.750% Senior Notes due 2030 and $2.00 billion aggregate principal amount of the Partnership’s 5.000% Senior Notes due 2050 (collectively, the “Notes”). The Notes are fully and unconditionally guaranteed by the Partnership’s wholly-owned subsidiary, Sunoco Logistics Operations, on a senior unsecured basis. Using proceeds from the January 2020 Senior Notes Offering, ETO redeemed its $400 million aggregate principal amount of 5.75% Senior Notes due September 1, 2020, its $1.05 billion aggregate principal amount of 4.15% Senior Notes due October 1, 2020, its $1.14 billion aggregate principal amount of 7.50% Senior Notes due October 15, 2020, its $250 million aggregate principal amount of 5.50% Senior Notes due February 15, 2020, ET’s $52 million aggregate principal amount of 7.50% Senior Notes due October 15, 2020 and Transwestern’s $175 million aggregate principal amount of 5.36% Senior Notes due December 9, 2020. HFOTCO Long-Term Debt In connection with the contribution transactions discussed in Note 2, HFOTCO became a wholly-owned subsidiary of ETO. As of March 31, 2020, HFOTCO had $225 million outstanding of tax exempt notes due 2050 (the "IKE Bonds"). The IKE Bonds are fully and unconditionally guaranteed by the Partnership, on a senior unsecured basis. The indentures under which the IKE Bonds were issued are subject to customary representations and warranties and affirmative and negative covenants, the majority of which are substantially similar to those found in ETO’s revolving credit facility, as further discussed below. Credit Facilities and Commercial Paper ETO Term Loan ETO’s term loan credit agreement provides for a $2 billion three-year term loan credit facility (the “ETO Term Loan”). Borrowings under the term loan agreement mature on October 17, 2022 and are available for working capital purposes and for general partnership purposes. The term loan agreement is unsecured and is guaranteed by our subsidiary, Sunoco Logistics Operations. As of March 31, 2020, the ETO Term Loan had $2 billion outstanding and was fully drawn. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 1.92%. ETO Five-Year Credit Facility ETO’s revolving credit facility (the “ETO Five-Year Credit Facility”) allows for unsecured borrowings up to $5.00 billion and matures on December 1, 2023. The ETO Five-Year Credit Facility contains an accordion feature, under which the total aggregate commitment may be increased up to $6.00 billion under certain conditions. As of March 31, 2020, the ETO Five-Year Credit Facility had $1.96 billion of outstanding borrowings, $113 million of which was commercial paper. The amount available for future borrowings was $2.97 billion after taking into account letters of credit of $72 million. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 2.24%. ETO 364-Day Facility ETO’s 364-day revolving credit facility (the “ETO 364-Day Facility”) allows for unsecured borrowings up to $1.00 billion and matures on November 27, 2020. As of March 31, 2020, the ETO 364-Day Facility had no outstanding borrowings. Sunoco LP Credit Facility Sunoco LP maintains a $1.50 billion revolving credit facility (the “Sunoco LP Credit Facility”), which matures in July 2023. As of March 31, 2020, the Sunoco LP Credit Facility had $265 million of outstanding borrowings and $8 million in standby letters of credit. As of March 31, 2020, Sunoco LP had $1.23 billion of availability under the Sunoco LP Credit Facility. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 2.63%. USAC Credit Facility USAC maintains a $1.60 billion revolving credit facility (the “USAC Credit Facility”), with a further potential increase of $400 million, which matures in April 2023. As of March 31, 2020, the USAC Credit Facility had $459 million of outstanding borrowings and no outstanding letters of credit. As of March 31, 2020, USAC had $1.14 billion of borrowing base availability and, subject to compliance with the applicable financial covenants, available borrowing capacity of $186 million under the USAC Credit Facility. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 3.67%. Compliance with Our Covenants We and our subsidiaries were in compliance with all requirements, tests, limitations, and covenants related to our debt agreements as of March 31, 2020.

On January 15, 2019, ET paid in full all outstanding borrowings under its senior secured term loan agreement and thereafter terminated the term loan agreement. In connection with the termination of the term loan agreement, the collateral securing certain series of the Partnership’s outstanding senior notes was released in accordance with the terms of the applicable indentures governing such senior notes.

On January 22, 2020, ETO completed a registered offering (the “January 2020 Senior Notes Offering”) of $1.00 billion aggregate principal amount of the Partnership’s 2.900% Senior Notes due 2025, $1.50 billion aggregate principal amount of the Partnership’s 3.750% Senior Notes due 2030 and $2.00 billion aggregate principal amount of the Partnership’s 5.000% Senior Notes due 2050 (collectively, the “Notes”). The Notes are fully and unconditionally guaranteed by the Partnership’s wholly-owned subsidiary, Sunoco Logistics Operations, on a senior unsecured basis.

Using proceeds from the January 2020 Senior Notes Offering, ETO redeemed its $400 million aggregate principal amount of 5.75% Senior Notes due September 1, 2020, its $1.05 billion aggregate principal amount of 4.15% Senior Notes due October 1, 2020, its $1.14 billion aggregate principal amount of 7.50% Senior Notes due October 15, 2020, its $250 million aggregate principal amount of 5.50% Senior Notes due February 15, 2020, ET’s $52 million aggregate principal amount of 7.50% Senior Notes due October 15, 2020 and Transwestern’s $175 million aggregate principal amount of 5.36% Senior Notes due December 9, 2020.

In connection with the contribution transactions discussed in Note 2, HFOTCO became a wholly-owned subsidiary of ETO. As of March 31, 2020, HFOTCO had $225 million outstanding of tax exempt notes due 2050 (the "IKE Bonds"). The IKE Bonds are fully and unconditionally guaranteed by the Partnership, on a senior unsecured basis. The indentures under which the IKE Bonds were issued are subject to customary representations and warranties and affirmative and negative covenants, the majority of which are substantially similar to those found in ETO’s revolving credit facility, as further discussed below.

ETO’s term loan credit agreement provides for a $2 billion three-year term loan credit facility (the “ETO Term Loan”). Borrowings under the term loan agreement mature on October 17, 2022 and are available for working capital purposes and for general partnership purposes. The term loan agreement is unsecured and is guaranteed by our subsidiary, Sunoco Logistics Operations.

As of March 31, 2020, the ETO Term Loan had $2 billion outstanding and was fully drawn. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 1.92%.

ETO’s revolving credit facility (the “ETO Five-Year Credit Facility”) allows for unsecured borrowings up to $5.00 billion and matures on December 1, 2023. The ETO Five-Year Credit Facility contains an accordion feature, under which the total aggregate commitment may be increased up to $6.00 billion under certain conditions.

As of March 31, 2020, the ETO Five-Year Credit Facility had $1.96 billion of outstanding borrowings, $113 million of which was commercial paper. The amount available for future borrowings was $2.97 billion after taking into account letters of credit of $72 million. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 2.24%.

ETO’s 364-day revolving credit facility (the “ETO 364-Day Facility”) allows for unsecured borrowings up to $1.00 billion and matures on November 27, 2020. As of March 31, 2020, the ETO 364-Day Facility had no outstanding borrowings.

Sunoco LP maintains a $1.50 billion revolving credit facility (the “Sunoco LP Credit Facility”), which matures in July 2023. As of March 31, 2020, the Sunoco LP Credit Facility had $265 million of outstanding borrowings and $8 million in standby letters of credit. As of March 31, 2020, Sunoco LP had $1.23 billion of availability under the Sunoco LP Credit Facility. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 2.63%.

USAC maintains a $1.60 billion revolving credit facility (the “USAC Credit Facility”), with a further potential increase of $400 million, which matures in April 2023. As of March 31, 2020, the USAC Credit Facility had $459 million of outstanding borrowings and no outstanding letters of credit. As of March 31, 2020, USAC had $1.14 billion of borrowing base availability and, subject to compliance with the applicable financial covenants, available borrowing capacity of $186 million under the USAC Credit Facility. The weighted average interest rate on the total amount outstanding as of March 31, 2020 was 3.67%.

We and our subsidiaries were in compliance with all requirements, tests, limitations, and covenants related to our debt agreements as of March 31, 2020.