Segment Information - Revenues and Operating Margin (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

Jun. 30, 2025

Jun. 30, 2024

Jun. 30, 2025

Jun. 30, 2024

Revenues:

Revenues

$ 4,260.1

$ 3,562.0

$ 8,821.6

$ 8,124.4

Sales of Commodities [Member]

Revenues:

Revenues

3,636.3

2,966.7

7,520.7

6,909.3

Fees from Midstream Services [Member]

Revenues:

Revenues

623.8

595.3

1,300.9

1,215.1

Gathering and Processing [Member]

Revenues:

Operating expenses

219.4

205.7

427.6

393.7

Other segment items

^[1]

938.7

740.1

2,321.3

1,810.5

Operating margin

587.6

572.6

1,189.8

1,128.9

Logistics and Transportation [Member]

Revenues:

Operating expenses

105.4

85.4

200.9

175.4

Other segment items

^[1]

2,684.6

2,362.8

6,143.4

5,693.1

Operating margin

632.4

547.7

1,279.1

1,079.8

Other [Member]

Revenues:

Revenues

280.5

(46.6)

31.7

(68.7)

Operating expenses

0.0

Operating margin

280.5

(46.6)

31.7

(68.7)

Corporate and Eliminations [Member]

Revenues:

Revenues

(1,188.5)

(905.7)

(2,772.2)

(2,088.3)

Operating Segments [Member]

Revenues:

Revenues

3,979.6

3,608.6

8,789.9

8,193.1

Operating expenses

324.8

291.1

628.5

569.1

Other segment items

^[1]

3,623.3

3,102.9

8,464.7

7,503.6

Operating margin

1,220.0

1,120.3

2,468.9

2,208.7

Operating Segments [Member] | Sales of Commodities [Member]

Revenues:

Revenues

3,355.8

3,013.3

7,489.0

6,978.0

Operating Segments [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

623.8

595.3

1,300.9

1,215.1

Operating Segments [Member] | Gathering and Processing [Member]

Revenues:

Revenues

613.9

645.6

1,289.7

1,331.6

Operating Segments [Member] | Gathering and Processing [Member] | Sales of Commodities [Member]

Revenues:

Revenues

203.3

254.3

404.0

527.2

Operating Segments [Member] | Gathering and Processing [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

410.6

391.3

885.7

804.4

Operating Segments [Member] | Logistics and Transportation [Member]

Revenues:

Revenues

3,365.7

2,963.0

7,500.2

6,861.5

Operating Segments [Member] | Logistics and Transportation [Member] | Sales of Commodities [Member]

Revenues:

Revenues

3,152.5

2,759.0

7,085.0

6,450.8

Operating Segments [Member] | Logistics and Transportation [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

213.2

204.0

415.2

410.7

Operating Segments [Member] | Other [Member]

Revenues:

Revenues

280.5

(46.6)

31.7

(68.7)

Operating Segments [Member] | Other [Member] | Sales of Commodities [Member]

Revenues:

Revenues

280.5

(46.6)

31.7

(68.7)

Intersegment Eliminations [Member]

Revenues:

Revenues

1,188.5

905.7

2,772.2

2,088.3

Intersegment Eliminations [Member] | Sales of Commodities [Member]

Revenues:

Revenues

1,180.7

898.3

2,757.1

2,076.2

Intersegment Eliminations [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

7.8

7.4

15.1

12.1

Intersegment Eliminations [Member] | Gathering and Processing [Member]

Revenues:

Revenues

1,131.8

872.8

2,649.0

2,001.5

Intersegment Eliminations [Member] | Gathering and Processing [Member] | Sales of Commodities [Member]

Revenues:

Revenues

1,131.5

872.5

2,648.5

2,003.5

Intersegment Eliminations [Member] | Gathering and Processing [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

0.3

0.3

0.5

(2.0)

Intersegment Eliminations [Member] | Logistics and Transportation [Member]

Revenues:

Revenues

56.7

32.9

123.2

86.8

Intersegment Eliminations [Member] | Logistics and Transportation [Member] | Sales of Commodities [Member]

Revenues:

Revenues

49.2

25.8

108.6

72.7

Intersegment Eliminations [Member] | Logistics and Transportation [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

7.5

7.1

14.6

14.1

Intersegment Eliminations [Member] | Corporate and Eliminations [Member]

Revenues:

Revenues

(1,188.5)

(905.7)

(2,772.2)

(2,088.3)

Intersegment Eliminations [Member] | Corporate and Eliminations [Member] | Sales of Commodities [Member]

Revenues:

Revenues

(1,180.7)

(898.3)

(2,757.1)

(2,076.2)

Intersegment Eliminations [Member] | Corporate and Eliminations [Member] | Fees from Midstream Services [Member]

Revenues:

Revenues

(7.8)

(7.4)

(15.1)

(12.1)

Consolidated Revenue [Member]

Revenues:

Revenues

5,168.1

4,514.3

11,562.1

10,281.4

Consolidated Revenue [Member] | Gathering and Processing [Member]

Revenues:

Revenues

1,745.7

1,518.4

3,938.7

3,333.1

Consolidated Revenue [Member] | Logistics and Transportation [Member]

Revenues:

Revenues

$ 3,422.4

$ 2,995.9

$ 7,623.4

$ 6,948.3

[1]	“Other segment items” represents Product purchases and fuel.