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Investments in Unconsolidated Affiliates
 6 Months Ended
Jun. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]  
Investments in Unconsolidated Affiliates Investments in Unconsolidated Affiliates
Net Investments and Earnings (Loss) of Unconsolidated Affiliates

Our net investments in and earnings (loss) from our unconsolidated affiliates are as follows (in millions):
InvestmentEarnings (Loss) from
Unconsolidated Affiliates		Earnings (Loss) from
Unconsolidated Affiliates
Three Months EndedSix Months Ended
June 30,December 31,June 30,June 30,
202220212022202120222021
Crestwood Permian Basin Holdings LLC(1)
$118.4 $116.1 $4.8 $1.0 $7.4 $0.2 
Tres Palacios Holdings LLC(2)
43.2 36.2 1.3 (0.1)1.9 9.2 
Powder River Basin Industrial Complex, LLC(3)
3.2 3.5 (0.1)— (0.3)0.1 
Stagecoach Gas Services LLC(4)
— — — (28.0)— (140.3)
Total$164.8 $155.8 $6.0 $(27.1)$9.0 $(130.8)

(1)As of June 30, 2022, our equity in the underlying net assets of Crestwood Permian Basin Holdings LLC (Crestwood Permian) exceeded our investment balance by $8.2 million, and this excess amount is not subject to amortization. Our Crestwood Permian investment is included in our gathering and processing south segment. On July 11, 2022, we acquired the remaining 50% equity interest in Crestwood Permian. See Note 16 for a further discussion of this acquisition.
(2)As of June 30, 2022, our equity in the underlying net assets of Tres Palacios Holdings LLC (Tres Holdings) exceeded the carrying value of our investment balance by approximately $20.9 million. During both the three and six months ended June 30, 2022 and 2021, we recorded amortization of approximately $0.3 million and $0.6 million, respectively, related to this excess basis, which is reflected as an increase in our earnings from unconsolidated affiliates in our consolidated statements of operations. Our Tres Holdings investment is included in our storage and logistics segment.
(3)As of June 30, 2022, our equity in the underlying net assets of Powder River Basin Industrial Complex, LLC (PRBIC) approximates the carrying value of our investment balance. Our PRBIC investment is included in our storage and logistics segment.
(4)In 2021, we and Con Edison Gas Pipeline and Storage Northeast, LLC each sold our 50% equity interest in our Stagecoach Gas Services LLC (Stagecoach Gas) equity investment to a subsidiary of Kinder Morgan, Inc. During the three and six months ended June 30, 2021, we recorded a $35.5 million and $155.4 million reduction in our equity earnings from unconsolidated affiliates related to losses recorded by us and our Stagecoach Gas equity investment associated with the sale, which also eliminated our $51.3 million historical basis difference between our investment balance and the equity in the underlying net assets of Stagecoach Gas. In addition, our earnings from unconsolidated affiliates during the three and six months ended June 30, 2021, were also reduced by our proportionate share of transaction costs of approximately $3.0 million related to the sale, which were paid by us in July 2021 on behalf of Stagecoach Gas. Our Stagecoach Gas investment was previously included in our storage and logistics segment.
Distributions and Contributions

The following table summarizes our distributions from and contributions to our unconsolidated affiliates (in millions):
Distributions(1)
Contributions
Six Months EndedSix Months Ended
June 30,June 30,
2022202120222021
Crestwood Permian$13.6 $5.5 $8.5 $3.3 
Tres Holdings1.4 10.6 6.5 6.9 
PRBIC— 0.1 — — 
Stagecoach Gas— 27.0 — — 
Total$15.0 $43.2 $15.0 $10.2 
(1)    In July 2022, we received cash distributions from Crestwood Permian and Tres Holdings of approximately $5.9 million and $3.4 million, respectively. In July 2022, we made a cash contribution of $75.0 million to Crestwood Permian prior to the acquisition of the remaining 50% equity interest in Crestwood Permian, which is further discussed in Note 16. In July 2022, we made a cash contribution of $0.3 million to Tres Holdings.