Reinsurance (Tables)

12 Months Ended

Dec. 31, 2021

Reinsurance Disclosures [Abstract]

Ceded reinsurance

Assumed, ceded and net amounts for the years ended December 31, 2021, 2020 and 2019 were as follows (in thousands of U.S. dollars): 

	Premiums Written		Premiums Earned		Losses and Loss Expenses
2021
Non-life	$	6,557,055	$	6,274,418	$	4,212,465
Life and Health	1,646,870		1,651,485		1,454,065
Assumed	$	8,203,925	$	7,925,903	$	5,666,530
Non-life	$	1,046,227	$	944,862	$	769,220
Life and Health	23,680		24,519		13,326
Ceded	$	1,069,907	$	969,381	$	782,546
Non-life	$	5,510,828	$	5,329,556	$	3,443,245
Life and Health	1,623,190		1,626,966		1,440,739
Net	$	7,134,018	$	6,956,522	$	4,883,984

	Premiums Written		Premiums Earned		Losses and Loss Expenses
2020
Non-life	$	5,376,703	$	5,571,201	$	4,358,975
Life and Health	1,499,222		1,505,819		1,344,117
Assumed	$	6,875,925	$	7,077,020	$	5,703,092
Non-life	$	550,784	$	516,672	$	342,271
Life and Health	24,283		23,522		25,921
Ceded	$	575,067	$	540,194	$	368,192
Non-life	$	4,825,919	$	5,054,529	$	4,016,704
Life and Health	1,474,939		1,482,297		1,318,196
Net	$	6,300,858	$	6,536,826	$	5,334,900

	Premiums Written		Premiums Earned		Losses and Loss Expenses
2019
Non-life (1)	$	5,792,542	$	5,433,357	$	3,879,242
Life and Health	1,492,778		1,489,721		1,277,684
Assumed	$	7,285,320	$	6,923,078	$	5,156,926
Non-life (1)	$	353,735	$	375,301	$	219,102
Life and Health	22,527		22,559		14,668
Ceded	$	376,262	$	397,860	$	233,770
Non-life (1)	$	5,438,807	$	5,058,056	$	3,660,140
Life and Health	1,470,251		1,467,162		1,263,016
Net	$	6,909,058	$	6,525,218	$	4,923,156

(1)Non-life Losses and loss expenses include amounts allocated to Corporate and Other as disclosed in Note 18.