Disposals of Long-Lived Assets	12 Months Ended
Dec. 31, 2015
Disposals And Impairments Of Long-Lived Assets [Abstract]
Disposals of Long-Lived Assets	DISPOSALS OR IMPAIRMENTS OF LONG-LIVED ASSETS Year Ended December 31, 2015 During the year ended December 31, 2015, our SemGas segment sold certain non-core Kansas based gas gathering and compression assets for approximately $1.0 million, resulting in a pre-tax loss of approximately $1.7 million which is reported in "loss (gain) on disposal or impairment, net" in the consolidated statement of operations and comprehensive income. See Note 12 for discussion of the goodwill impairment recorded by our Crude Transportation segment. Year Ended December 31, 2014 On June 1, 2014, our SemGas segment sold certain natural gas gathering assets in Eastern Oklahoma resulting in a $20.1 million pre-tax loss on a cash sales price of $2.4 million. The assets sold were made up of property, plant and equipment with a net book value of $22.5 million. The loss on the sale was reported in "loss (gain) on disposal or impairment, net" in the consolidated statement of operations and comprehensive income. The operations of the gas gathering assets were not material to SemGroup. During the year ended December 31, 2014, we recorded an impairment charge of $11.9 million related to leaseholds of unproved oil and gas properties located in Kansas. These assets were written off when due to the downturn in crude oil prices and the remaining life of the leaseholds, it became apparent that these properties would not be developed. These assets were held by a subsidiary included in Corporate and Other in our segment disclosures (Note 8). Year Ended December 31, 2013 There were no significant gains (losses) recorded during the year ended December 31, 2013 related to the disposal or impairment of long-lived assets.

DISPOSALS OR IMPAIRMENTS OF LONG-LIVED ASSETS

Year Ended December 31, 2015

During the year ended December 31, 2015, our SemGas segment sold certain non-core Kansas based gas gathering and compression assets for approximately $1.0 million, resulting in a pre-tax loss of approximately $1.7 million which is reported in "loss (gain) on disposal or impairment, net" in the consolidated statement of operations and comprehensive income. See Note 12 for discussion of the goodwill impairment recorded by our Crude Transportation segment.

Year Ended December 31, 2014

On June 1, 2014, our SemGas segment sold certain natural gas gathering assets in Eastern Oklahoma resulting in a $20.1 million pre-tax loss on a cash sales price of $2.4 million. The assets sold were made up of property, plant and equipment with a net book value of $22.5 million. The loss on the sale was reported in "loss (gain) on disposal or impairment, net" in the consolidated statement of operations and comprehensive income. The operations of the gas gathering assets were not material to SemGroup.

During the year ended December 31, 2014, we recorded an impairment charge of $11.9 million related to leaseholds of unproved oil and gas properties located in Kansas. These assets were written off when due to the downturn in crude oil prices and the remaining life of the leaseholds, it became apparent that these properties would not be developed. These assets were held by a subsidiary included in Corporate and Other in our segment disclosures (Note 8).

Year Ended December 31, 2013

There were no significant gains (losses) recorded during the year ended December 31, 2013 related to the disposal or impairment of long-lived assets.