Consolidated Statements of Shareholders' Equity Statement (USD $) In Millions, except Share data	Total	Common Stock [Member] Voting Shares [Member]	Common Stock [Member] Listed Shares [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Shareholders' Equity, Total [Member]	KMI drop-down with KMP [Member]	KMP Acquisition of Copano [Member]
Total Shareholders' Equity at Dec. 31, 2011		$ 0	$ 3,760	$ (1,256)	$ 0
Shareholders' Equity (in shares) at Dec. 31, 2011		0	98,509,389
Shares distributions (in shares)		0	3,068,120
Share distributions		0	231	(231)
Stock Issued During Period, Value, New Issues			0
Tax impact of KMI drop-down to KMP							0	0
Net income (loss)	(60)			(60)
Change in fair value of derivatives utilized for hedging purposes	20				20
Reclassification of change in fair value of derivatives to net income	2				0
Foreign currency translation adjustments					2
Total Shareholders' Equity at Jun. 30, 2012		0	3,991	(1,547)	22	2,466
Shareholders' Equity (in shares) at Jun. 30, 2012		0	101,577,509			101,577,511
Total Shareholders' Equity at Dec. 31, 2012	3,464	0	5,201	(1,755)	18
Shareholders' Equity (in shares) at Dec. 31, 2012		0	115,118,335
Shares distributions (in shares)		0	3,531,547
Share distributions		0	299	(299)
Stock Issued During Period, Shares, New Issues			860,600
Stock Issued During Period, Value, New Issues			73
Tax impact of KMI drop-down to KMP	(89)						26	63
Net income (loss)	144			144
Change in fair value of derivatives utilized for hedging purposes	3				3
Reclassification of change in fair value of derivatives to net income	(1)				(1)
Foreign currency translation adjustments					(13)
Total Shareholders' Equity at Jun. 30, 2013	$ 3,759	$ 0	$ 5,662	$ (1,910)	$ 7	$ 3,759
Shareholders' Equity (in shares) at Jun. 30, 2013		0	119,510,482			119,510,486