Significant Accounting Policies (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2021	Dec. 31, 2023	Jul. 31, 2022
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Agreement description		Debt instruments are considered substantially different if the present value of the cash flows under the terms of the new debt instrument is at least 10 percent different from the present value of the remaining cash flows under the terms of the existing debt instrument. We consider changes in principal amounts, interest rates, and maturity dates of the existing and new instruments when evaluating the change in cash flows between the instruments.
Gain or loss on modification	$ (14,900,000)	$ 0
Upfront compensation		0
Cash payments related to transfer of assets		$ 0
Unvested Restricted Stock Units [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Unvested restricted stock, term		Our participating securities consist of unvested restricted stock units that vest no later than three years following grant date as well as certain four-year retention awards that participate in nonforfeitable dividends with the common equity owners.
Commercial Paper Program [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Agreement description		Under the terms of the Commercial Paper Program, we may issue, from time to time, unsecured commercial paper notes with varying maturities of less than one year.
Amount outstanding		$ 2,750,000,000	$ 2,750,000,000
Commercial Paper Program [Member] | Unsecured Commercial Paper Notes [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Agreement description		Under the terms of the unsecured commercial paper note program (the “Commercial Paper Program”), we may issue, from time to time, unsecured commercial paper notes with varying maturities of less than one year.
WestTex LLC [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		72.80%
Logistics and Transportation [Member] | Cedar Bayou Fractionators LP [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		88.00%
Logistics and Transportation [Member] | Train Seven [Member] | Targa Resources Partners Lp [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		80.00%
Logistics and Transportation [Member] | Cayenne Pipeline Limited Liability Company [Member] | Targa Resources Partners Lp [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		50.00%
Logistics and Transportation [Member] | Gulf Coast Fractionators [Member] | Targa Resources Partners Lp [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		38.80%
Gathering and Processing [Member] | Centrahoma Processing LLC [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		60.00%
Gathering and Processing [Member] | Targa Badland [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		55.00%
Gathering and Processing [Member] | Venice Energy Services [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		76.80%
Gathering and Processing [Member] | Cayenne Pipeline Limited Liability Company [Member] | Targa Resources Partners Lp [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Ownership interest		50.00%
Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Payment of commodities due period		10 days
Minimum [Member] | Unvested Restricted Stock Units [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Vesting period		3 years
Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Payment of commodities due period		30 days