CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 211.8	$ 219.0
Trade receivables, net of allowances of $2.5 million and $2.2 million at March 31, 2023 and December 31, 2022	1,023.4	1,408.4
Inventories	156.2	393.8
Assets from risk management activities	146.5	179.9
Other current assets	100.9	155.5
Total current assets	1,638.8	2,356.6
Property, plant and equipment, net	14,470.0	14,214.6
Intangible assets, net	2,638.6	2,734.6
Long-term assets from risk management activities	36.2	24.5
Investments in unconsolidated affiliates	134.7	131.3
Other long-term assets	107.2	98.4
Total assets	19,025.5	19,560.0
Current liabilities:
Accounts payable	1,255.3	1,448.8
Accrued liabilities	188.6	289.5
Interest payable	127.1	174.0
Liabilities from risk management activities	156.6	320.1
Current debt obligations	739.0	834.3
Total current liabilities	2,466.6	3,066.7
Long-term debt	11,439.6	10,702.1
Long-term liabilities from risk management activities	62.4	140.1
Deferred income taxes, net	298.3	327.7
Other long-term liabilities	346.4	341.2
Contingencies (see Note 14)	0.0	0.0
Targa Resources Corp. stockholders' equity:
Common stock ($0.001 par value, 450,000,000 shares authorized as of March 31, 2023 and December 31, 2022)	0.2	0.2
Preferred stock ($0.001 par value, after designation of Series A Preferred Stock: 98,800,000 shares authorized, zero shares issued and outstanding)	0.0	0.0
Additional paid-in capital	3,146.0	3,702.3
Retained earnings (deficit)	(129.8)	(626.8)
Accumulated other comprehensive income (loss)	84.8	54.7
Treasury stock, at cost (13,070,260 shares as of March 31, 2023 and 11,896,829 shares as of December 31, 2022)	(550.5)	(464.7)
Total Targa Resources Corp. stockholders' equity	2,550.7	2,665.7
Noncontrolling interests	1,861.5	2,316.5
Total owners' equity	4,412.2	4,982.2
Total liabilities, Series A Preferred Stock and owners' equity	19,025.5	19,560.0
Series A Preferred Stock [Member]
Current liabilities:
Series A Preferred 9.5% Stock, $1,000 per share liquidation preference (1,200,000 shares authorized, zero shares issued and outstanding as of March 31, 2023 and December 31, 2022), net of discount	$ 0.0	$ 0.0