Derivative Instruments - Fair Value Inputs - Quantitative Information (Details) - Liquefaction Supply Derivatives [Member] - Fair Value, Inputs, Level 3 [Member]	6 Months Ended
	Jun. 30, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Tecniques [Line Items]
Net Fair Value Asset	$ 89,000,000
Minimum [Member] | Valuation, Market Approach [Member]
Fair Value Measurement Inputs and Valuation Tecniques [Line Items]
Significant Unobservable Inputs Range	$ (0.700)
Minimum [Member] | Valuation Technique, Option Pricing Model [Member]
Fair Value Measurement Inputs and Valuation Tecniques [Line Items]
Fair Value Inputs Basis Spread Percentage	128.00%
Maximum [Member] | Valuation, Market Approach [Member]
Fair Value Measurement Inputs and Valuation Tecniques [Line Items]
Significant Unobservable Inputs Range	$ 0.056
Maximum [Member] | Valuation Technique, Option Pricing Model [Member]
Fair Value Measurement Inputs and Valuation Tecniques [Line Items]
Fair Value Inputs Basis Spread Percentage	176.00%