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Accounting Policies Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2013
Minimum [Member] | Building and Pipeline Improvements [Member]
Estimated useful life (years)	15 years
Minimum [Member] | Pipelines and terminals [Member]
Estimated useful life (years)	15 years
Minimum [Member] | Asset retirement obligation assets [Member]
Estimated useful life (years)	15 years
Minimum [Member] | Other equipment [Member]
Estimated useful life (years)	3 years
Maximum [Member] | Building and Pipeline Improvements [Member]
Estimated useful life (years)	40 years
Maximum [Member] | Pipelines and terminals [Member]
Estimated useful life (years)	40 years
Maximum [Member] | Asset retirement obligation assets [Member]
Estimated useful life (years)	50 years
Maximum [Member] | Other equipment [Member]
Estimated useful life (years)	15 years

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration