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Impairments – Schedule of Pre-tax Loss (Gain) on Impairments and Divestitures (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Finite-Lived Intangible Assets [Line Items]          
Goodwill impairment loss       $ 1,600  
Loss (gain) on Sale of Assets and Asset Impairment Charges $ (1,005)   $ 10 (1,976) $ 10
Pre-tax loss (gain) on divestitures and impairments, net 1,005   (10) 1,976 (10)
Natural Gas Pipelines          
Finite-Lived Intangible Assets [Line Items]          
Goodwill impairment loss 1,000   0 1,000 0
Loss (gain) on Sale of Assets and Asset Impairment Charges 0   (10) 0 (10)
Products Pipelines          
Finite-Lived Intangible Assets [Line Items]          
Loss (gain) on impairments of long-lived assets 0   0 21 0
Terminals          
Finite-Lived Intangible Assets [Line Items]          
Loss (gain) on impairments of long-lived assets 5   0 5 0
CO2          
Finite-Lived Intangible Assets [Line Items]          
Goodwill impairment loss 0   0 600 0
Kinder Morgan Canada          
Finite-Lived Intangible Assets [Line Items]          
Loss (gain) on Sale of Assets and Asset Impairment Charges 0   0 0 (2)
Trans Mountain and Trans Mountain Expansion Project | Kinder Morgan Canada          
Finite-Lived Intangible Assets [Line Items]          
Loss (gain) on Sale of Assets and Asset Impairment Charges 0   0 0 2
Oil and Gas Properties | CO2          
Finite-Lived Intangible Assets [Line Items]          
Loss (gain) on impairments of long-lived assets $ 0 $ 350 $ 0 $ 350 $ 0