CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues:
Total revenues	$ 4,561.5	$ 4,562.4
Costs and expenses:
Product purchases and fuel	3,257.8	3,218.0
Operating expenses	303.6	278.0
Depreciation and amortization expense	367.6	340.5
General and administrative expense	94.5	86.5
Other operating (income) expense	(5.3)	0.0
Income (loss) from operations	543.3	639.4
Other income (expense):
Interest expense, net	(197.1)	(228.6)
Equity earnings (loss)	5.5	2.8
Other, net	0.3	1.7
Income (loss) before income taxes	352.0	415.3
Income tax (expense) benefit	(72.2)	(82.7)
Net income (loss)	279.8	332.6
Less: Net income (loss) attributable to noncontrolling interests	9.3	57.4
Net income (loss) attributable to Targa Resources Corp.	270.5	275.2
Premium on repurchase of noncontrolling interests, net of tax	70.5
Net income (loss) attributable to common shareholders	$ 200.0	$ 275.2
Net income (loss) per common share - basic	$ 0.91	$ 1.23
Net income (loss) per common share - diluted	$ 0.91	$ 1.22
Weighted average shares outstanding - basic	217.9	222.8
Weighted average shares outstanding - diluted	218.7	223.7
Sales of Commodities [Member]
Revenues:
Total revenues	$ 3,884.4	$ 3,942.4
Fees from Midstream Services [Member]
Revenues:
Total revenues	$ 677.1	$ 620.0