Intangible Assets and Goodwill - Schedule of Amortization Expense of our Intangible Assets by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Intangible Assets [Line Items]
Amortization of intangible assets	$ 52	$ 51	$ 104	$ 101
NGL Pipelines & Services
Intangible Assets [Line Items]
Amortization of intangible assets	12	11	23	21
Crude Oil Pipelines & Services
Intangible Assets [Line Items]
Amortization of intangible assets	21	26	42	51
Natural Gas Pipelines & Services
Intangible Assets [Line Items]
Amortization of intangible assets	18	13	36	26
Petrochemical & Refined Products Services
Intangible Assets [Line Items]
Amortization of intangible assets	$ 1	$ 1	$ 3	$ 3