Common Stock (Details) - USD ($)	3 Months Ended	12 Months Ended		243 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Common stock, outstanding (in shares)	53,299,738	53,299,738	54,755,900	53,299,738
Dividend paid (in dollars per share)	$ 0.13
Stock repurchase, authorized amount (in US dollars)	$ 1,450,000,000	$ 1,450,000,000		$ 1,450,000,000
Number of shares repurchased (in shares)		1,600,000		19,200,000
Stock repurchased (in US dollars)		$ 195,546,000	$ 112,553,000	$ 1,100,000,000
Remaining authorized repurchase amount (in US dollars)	$ 350,400,000	$ 350,400,000		$ 350,400,000