Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Parenthetical) (Details) - USD ($)	3 Months Ended																12 Months Ended
	Dec. 31, 2019		Sep. 30, 2019		Jun. 30, 2019		Mar. 31, 2019		Dec. 31, 2018		Sep. 30, 2018		Jun. 30, 2018		Mar. 31, 2018		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 72,000,000	[1]	$ 50,000,000	[1]	$ 39,000,000	[1]	$ 55,000,000	[1]	$ 120,000,000	[1]	$ 41,000,000	[1]	$ 107,000,000	[1]	$ 30,000,000	[1]	$ 215,695,961	[1],[2]	$ 298,124,983	[1],[2]	$ 326,777,744	[2]

[1] The sum of the earnings per share for the four quarters may differ from annual earnings per share due to the required method of computing the weighted average shares in interim periods.

[2] Net income for years ended December 31, 2019, 2018, and 2017 was $215,695,961; $298,124,983 and $326,777,744, respectively.