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Estimates, Significant Accounting Policies and Balance Sheet Detail Estimates (Schedule of Useful Lives) (Details) (Details)
12 Months Ended
Dec. 31, 2016
Minimum [Member] | Customer relationships, contracts and agreements (3 to 46 years)  
Intangible assets, useful life, minimum (years) 3 years
Minimum [Member] | Other (1 to 15 years)  
Intangible assets, useful life, minimum (years) 1 year
Maximum [Member] | Customer relationships, contracts and agreements (3 to 46 years)  
Intangible assets, useful life, minimum (years) 46 years
Maximum [Member] | Trade names (15 years)  
Intangible assets, useful life, minimum (years) 15 years
Maximum [Member] | Patents (9 years)  
Intangible assets, useful life, minimum (years) 9 years
Maximum [Member] | Other (1 to 15 years)  
Intangible assets, useful life, minimum (years) 15 years
Buildings and improvements [Member] | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 1 year
Buildings and improvements [Member] | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 45 years
Pipelines And Equipment [Member] | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 5 years
Pipelines And Equipment [Member] | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 83 years
Natural gas and NGL storage facilities (5 to 46 years) | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 5 years
Natural gas and NGL storage facilities (5 to 46 years) | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 46 years
Bulk storage, equipment and facilities (2 to 83 years) | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 2 years
Bulk storage, equipment and facilities (2 to 83 years) | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 83 years
Tanks and other equipment (5 to 40 years) | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 5 years
Tanks and other equipment (5 to 40 years) | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 40 years
Retail equipment (2 to 99 years) | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 2 years
Retail equipment (2 to 99 years) | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 99 years
Vehicles [Member] | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 1 year
Vehicles [Member] | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 25 years
Right of way (20 to 83 years) | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 20 years
Right of way (20 to 83 years) | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 83 years
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]  
Property, plant and equipment, useful life, minimum (years) 1 year
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]  
Property, plant and equipment, useful life, minimum (years) 40 years