Revenue (Breakdown of Revenues by Accounting Standards) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers									$ 2,211,537	$ 1,479,686	$ 1,344,359
Total revenues	$ 3,782,702	$ 2,998,824	$ 3,235,805	$ 2,594,719	$ 2,508,303	$ 1,885,586	$ 1,854,738	$ 1,815,993	12,612,050	8,064,620	8,003,253
Revenues under ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers									2,211,537	1,479,686	1,344,359
Revenues under ASC 815
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total revenues									$ 10,400,513	$ 6,584,934	$ 6,658,894