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Revenues (Tables)
 12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Contract with Customer, Asset and Liability
The following table summarizes our contract assets and contract liabilities (in millions):
December 31,

20212020
Contract assets (non-current)
$1.3 $1.0 
Contract liabilities (current)(1)
$10.7 $10.3 
Contract liabilities (non-current)(1)
$187.1 $172.2 

(1)During the year ended December 31, 2021, we recognized revenues of approximately $14.0 million that were previously included in contract liabilities at December 31, 2020. The remaining change in our contract liabilities during the year ended December 31, 2021 related to capital reimbursements associated with our revenue contracts and revenue deferrals associated with our contracts with increasing (decreasing) rates.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
The following table summarizes the transaction price allocated to our remaining performance obligations under certain contracts that have not been recognized as of December 31, 2021 (in millions):
2022$72.7 
202352.6 
202431.7 
20250.1 
Total$157.1 
Disaggregation of Revenue The following tables summarize our revenues from contracts with customers disaggregated by type of product/service sold and by commodity type for each of our segments for the years ended December 31, 2021, 2020 and 2019 (in millions). In addition, the revenues from contracts with customers are presented in the three operating and reporting segments that are further discussed in Note 16 for all periods presented. We believe this summary best depicts how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by economic factors. Our non-Topic 606 revenues presented in the tables below primarily represent revenues related to our commodity-based derivatives.
Year Ended December 31, 2021
Gathering and Processing North
Gathering and Processing South
Storage and Logistics
Intersegment Elimination
Total
Topic 606 revenues
Gathering
Natural gas
$56.3 $83.2 $— $— $139.5 
Crude oil
73.1 — — — 73.1 
Water
94.0 — — — 94.0 
Processing
Natural gas
24.4 5.0 — — 29.4 
Compression
Natural gas
— 17.1 — — 17.1 
Storage
Crude oil
0.3 — 0.5 (0.3)0.5 
NGLs
— — 11.5 — 11.5 
Pipeline
Crude oil
— — 2.6 — 2.6 
NGLs
— — 0.2 — 0.2 
Transportation
Crude oil
2.7 — — (0.1)2.6 
NGLs
— — 17.3 — 17.3 
Rail Loading
Crude oil
— — 4.6 — 4.6 
Product Sales
Natural gas
171.4 0.6 326.2 (171.1)327.1 
Crude oil
401.5 — 1,237.7 (82.6)1,556.6 
NGLs
209.4 — 1,796.6 (205.2)1,800.8 
Other
— — 1.7 — 1.7 
Total Topic 606 revenues
1,033.1 105.9 3,398.9 (459.3)4,078.6 
Non-Topic 606 revenues
0.9 — 489.5 — 490.4 
Total revenues
$1,034.0 $105.9 $3,888.4 $(459.3)$4,569.0 
Year Ended December 31, 2020
Gathering and Processing North
Gathering and Processing South
Storage and Logistics
Intersegment Elimination
Total
Topic 606 revenues
Gathering
Natural gas
$53.4 $87.2 $— $— $140.6 
Crude oil
95.3 — — — 95.3 
Water
92.6 — — — 92.6 
Processing
Natural gas
22.4 9.5 — — 31.9 
Compression
Natural gas
— 23.9 — — 23.9 
Storage
Crude oil
1.1 — 1.9 (0.3)2.7 
NGLs
— — 13.1 — 13.1 
Pipeline
Crude oil
— — 4.1 — 4.1 
NGLs
— — 0.3 — 0.3 
Transportation
Crude oil
6.2 — 1.9 (0.1)8.0 
NGLs
— — 10.9 — 10.9 
Rail Loading
Crude oil
— — 7.4 — 7.4 
Product Sales
Natural gas
53.7 (0.3)90.9 (52.8)91.5 
Crude oil
292.2 — 660.7 (53.0)899.9 
NGLs
54.0 — 614.2 (53.6)614.6 
Other
— — 1.5 — 1.5 
Total Topic 606 revenues
670.9 120.3 1,406.9 (159.8)2,038.3 
Non-Topic 606 revenues
— — 216.0 — 216.0 
Total revenues
670.9 120.3 1,622.9 (159.8)2,254.3 
Year Ended December 31, 2019
Gathering and Processing North
Gathering and Processing South
Storage and Logistics
Intersegment Elimination
Total
Topic 606 revenues
Gathering
Natural gas
$51.2 $112.0 $— $— $163.2 
Crude oil
75.0 — — — 75.0 
Water
79.6 — — — 79.6 
Processing
Natural gas
18.9 10.0 — — 28.9 
NGLs
— — — — — 
Compression
Natural gas
— 24.9 — — 24.9 
Storage
Crude oil
1.9 — 3.5 (0.4)5.0 
NGLs
— — 6.3 — 6.3 
Pipeline
Crude oil
— — 5.2 — 5.2 
Transportation
Crude oil
7.0 — 5.8 (0.1)12.7 
NGLs
— — 11.7 — 11.7 
Water
— — 0.2 — 0.2 
Rail Loading
Crude oil
— — 11.0 — 11.0 
Product Sales
Natural gas
55.6 1.2 72.3 (33.4)95.7 
Crude oil
532.1 — 1,315.6 (121.1)1,726.6 
NGLs
40.5 0.9 659.3 (20.0)680.7 
Other
— — 1.9 — 1.9 
Total Topic 606 revenues
861.8 149.0 2,092.8 (175.0)2,928.6 
Non-Topic 606 revenues
— — 253.3 — 253.3 
Total revenues
$861.8 $149.0 $2,346.1 $(175.0)$3,181.9