CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenues:
Total revenues		$ 4,520.5	$ 4,959.1
Costs and expenses:
Product purchases and fuel		3,019.0	4,204.1
Operating expenses		258.2	183.5
Depreciation and amortization expense		324.8	209.1
General and administrative expense		82.4	67.1
Other operating (income) expense		(0.6)	(0.5)
Income (loss) from operations		836.7	295.8
Other income (expense):
Interest expense, net		(168.0)	(93.6)
Equity earnings (loss)		(0.2)	5.6
Gain (loss) from financing activities			(15.8)
Other, net		(3.0)	(0.5)
Income (loss) before income taxes		665.5	191.5
Income tax (expense) benefit		(110.3)	(22.9)
Net income (loss)		555.2	168.6
Less: Net income (loss) attributable to noncontrolling interests		58.2	80.6
Net income (loss) attributable to Targa Resources Corp.		497.0	88.0
Premium on repurchase of noncontrolling interests, net of tax	[1]	490.7	53.1
Dividends on Series A Preferred Stock			21.8
Net income (loss) attributable to common shareholders		$ 6.3	$ 13.1
Net income (loss) per common share - basic		$ 0.03	$ 0.06
Net income (loss) per common share - diluted		$ 0.03	$ 0.06
Weighted average shares outstanding - basic		226.4	228.5
Weighted average shares outstanding - diluted		229.3	232.4
Sales of Commodities [Member]
Revenues:
Total revenues		$ 4,025.0	$ 4,566.2
Fees from Midstream Services [Member]
Revenues:
Total revenues		$ 495.5	$ 392.9

[1] Represents premium paid on the Grand Prix Transaction and the DevCo JV Repurchase. See Note 4 – Acquisitions and Divestitures