Acquisitions and Divestitures Investment Acquisition (Details) - NGPL Holdings LLC $ in Millions |
Dec. 10, 2015
USD ($)
|
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Schedule of Equity Method Investments [Line Items] | |
Equity Method Investment, Ownership Percentage | 50.00% |
Payments to Acquire Assets, Investing Activities | $ 136 |
Equity Method Investment, Incremental Ownership Percentage Acquired | 30.00% |
KMI and Brookfield Infrastructure Partners L.P. [Member] | |
Schedule of Equity Method Investments [Line Items] | |
Equity Method Investment, Incremental Ownership Percentage Acquired | 53.00% |
Brookfield Infrastructure Partners L.P. [Member] | |
Schedule of Equity Method Investments [Line Items] | |
Equity Method Investment, Ownership Percentage | 50.00% |