Employee Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Number of Canadian subsidiaries that sponsor retirement plans	2
Defined contribution plan, minimum annual contribution per employee, percent	1.00%
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent	50.00%
Trans Mountain Pipeline [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost	$ 11,000,000	$ 11,000,000	$ 7,000,000
Defined Benefit Plan, Net Periodic Benefit Cost, next twelve months	11,000,000
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	10,000,000
Tennessee Gas Pipeline Company LLC [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost	10,000,000	4,000,000
Defined Benefit Plan, Net Periodic Benefit Cost, next twelve months	13,000,000
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	0
Savings plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent	5.00%
Defined Contribution Plan, Cost Recognized	19,000,000	16,000,000	17,000,000
Tennessee Gas natural gas pipeline [Member]
Defined Benefit Plan Disclosure [Line Items]
Business Acquisition, Period Results Included in Combined Entity		7 months
Defined Benefit Plan, Funded Status of Plan	119,000,000	76,000,000
Kinder Morgan Energy Partners, L.P. [Domain]
Defined Benefit Plan Disclosure [Line Items]
Multi-employer pension plan expense	11,000,000	11,000,000	12,000,000
Benefit obligation [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and Other Postretirement Defined Benefit Plans, Liabilities	$ 61,000,000	$ 76,000,000