Net Income Per Share Attributable to Common Stockholders (Details) - $ / shares shares in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average number of common shares outstanding, basic		252.9	253.0
Dilutive Unvested Stock		1.5	1.1
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities		4.5	45.5
Weighted Average Number of Shares Outstanding, Diluted		258.9	299.6
Net income per share attributable to common stockholders—basic (1)	[1]	$ 1.56	$ 1.48
Diluted net income per share attributable to common stockholders	[1]	$ 1.54	$ 1.43
Antidilutive securities excluded from computation of earnings per share		1.9	2.1
Unvested stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share	[2]	1.9	2.1
2021 Cheniere Convertible Notes [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share	[3]	0.0	0.0
2025 CCH HoldCo II Convertible Notes [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share	[4]	0.0	0.0
2045 Cheniere Convertible Senior Notes [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share		0.0	0.0
Restricted Stock With Unsatisfied Performance Conditions [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share		0.5	0.7

[1] Earnings per share in the table may not recalculate exactly due to rounding because it is calculated based on whole numbers, not the rounded numbers presented.

[2] Does not include 0.5 million shares and 0.7 million shares for the three months ended March 31, 2021 and 2020, respectively, of unvested stock because the performance conditions had not yet been satisfied as of the respective dates.

[3] Since we have the intent and ability to settle the remaining outstanding principal amount of the 2021 Cheniere Convertible Unsecured Notes in cash and the excess conversion premium (the “conversion spread”) in either cash or shares, the treasury stock method was applied for calculating any potential dilutive effect of the conversion spread on net income per share for the three months ended March 31, 2021. However, since the average market price of our common stock did not exceed the conversion price of our 2021 Cheniere Convertible Unsecured Notes, the conversion spread was excluded from the computation of diluted net income per share for the three months ended March 31, 2021.

[4] Since we redeemed the remaining principal amount of the 2025 CCH HoldCo II Convertible Senior Notes and the related premium in cash in July 2020, the 2025 CCH HoldCo II Convertible Senior Notes were not included in the computation of diluted net income per share for the three months ended March 31, 2021.