CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 228.6	$ 242.8
Trade receivables, net of allowances of $3.6 million and $0.1 million at September 30, 2021 and December 31, 2020	1,291.0	862.8
Inventories	316.8	181.5
Assets from risk management activities	82.7	85.5
Other current assets	74.2	87.7
Total current assets	1,993.3	1,460.3
Property, plant and equipment, net	11,922.4	12,173.6
Intangible assets, net	1,284.2	1,382.4
Long-term assets from risk management activities	13.4	49.3
Investments in unconsolidated affiliates	674.6	714.0
Other long-term assets	84.8	96.1
Total assets	15,972.7	15,875.7
Current liabilities:
Accounts payable	1,652.3	833.8
Accrued liabilities	240.2	186.4
Distributions payable	71.0	115.4
Interest payable	79.9	132.6
Liabilities from risk management activities	472.3	142.6
Current debt obligations	352.6	368.6
Total current liabilities	2,868.3	1,779.4
Long-term debt	6,434.1	7,387.1
Long-term liabilities from risk management activities	151.2	43.4
Deferred income taxes, net	78.7	152.1
Other long-term liabilities	290.8	309.1
Contingencies (see Note 13)	0.0	0.0
Targa Resources Corp. stockholders' equity:
Common stock ($0.001 par value, 450,000,000 shares authorized)	0.2	0.2
Preferred stock ($0.001 par value, after designation of Series A Preferred Stock: 98,800,000 shares authorized, no shares issued and outstanding)	0.0	0.0
Additional paid-in capital	4,299.7	4,839.9
Retained earnings (deficit)	(1,508.7)	(1,893.5)
Accumulated other comprehensive income (loss)	(442.1)	(141.8)
Treasury stock, at cost (7,123,991 shares as of September 30, 2021 and 6,731,035 shares as of December 31, 2020)	(164.0)	(150.9)
Total Targa Resources Corp. stockholders' equity	2,185.1	2,653.9
Noncontrolling interests	3,214.8	3,249.3
Total owners' equity	5,399.9	5,903.2
Total liabilities, Series A Preferred Stock and owners' equity	15,972.7	15,875.7
Series A Preferred Stock [Member]
Current liabilities:
Series A Preferred 9.5% Stock, $1,000 per share liquidation preference, (1,200,000 shares authorized, 919,300 shares issued and outstanding), net of discount (see Note 7)	$ 749.7	$ 301.4