Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Fixed maturities, available-for-sale (amortized cost of $9,751,683 in 2019 and $9,950,773 in 2018)	$ 11,642,212	$ 11,120,884
Equity securities (cost of $3,115,609 in 2019 and $2,971,856 in 2018)	6,875,933	5,720,945
Total Investments	18,518,145	16,841,829
Cash and cash equivalents	2,220,793	2,014,168
Restricted cash and cash equivalents	420,673	382,264
Receivables	2,191,947	1,692,526
Reinsurance recoverables	5,372,769	5,221,947
Deferred policy acquisition costs	554,233	474,513
Prepaid reinsurance premiums	1,459,272	1,331,022
Goodwill	2,189,367	2,237,975
Intangible assets	1,695,588	1,726,196
Other assets	1,798,797	1,383,823
Total Assets	36,421,584	33,306,263
LIABILITIES AND EQUITY
Unpaid losses and loss adjustment expenses	14,335,783	14,276,479
Life and annuity benefits	1,032,715	1,001,453
Unearned premiums	4,116,051	3,611,028
Payables to insurance and reinsurance companies	485,570	337,326
Senior long-term debt and other debt (estimated fair value of $3,845,000 in 2019 and $3,030,000 in 2018)	3,625,744	3,009,577
Other liabilities	2,261,343	1,796,036
Total Liabilities	25,857,206	24,031,899
Redeemable noncontrolling interests	151,297	174,062
Commitments and contingencies
Shareholders' equity:
Common stock	3,400,964	3,392,993
Retained earnings	6,808,201	5,782,310
Accumulated other comprehensive income (loss)	187,200	(94,650)
Total Shareholders' Equity	10,396,365	9,080,653
Noncontrolling interests	16,716	19,649
Total Equity	10,413,081	9,100,302
Total Liabilities and Equity	36,421,584	33,306,263
Fixed Maturities [Member]
ASSETS
Fixed maturities, available-for-sale (amortized cost of $9,751,683 in 2019 and $9,950,773 in 2018)	10,258,640	10,043,188
Short-term Investments [Member]
ASSETS
Fixed maturities, available-for-sale (amortized cost of $9,751,683 in 2019 and $9,950,773 in 2018)	$ 1,383,572	$ 1,077,696