CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost	$ 63,144,681,000	$ 54,233,151,000
Fixed maturities, fair value	2,640,827,000	2,547,210,000
Equity securities, cost	585,845,000	589,221,000
Mortgage loans, securitizations	0	134,000
Investment real estate, accumulated depreciation	175,000	251,000
Other intangibles, accumulated amortization	225,657,000	197,368,000
Property and equipment, accumulated depreciation	$ 39,415,000	$ 30,989,000
Preferred Stock, par value (in dollars per share)	$ 1	$ 1
Preferred Stock, shares authorized (in shares)	2,000	2,000
Preferred Stock, Liquidation preference	$ 2,000	$ 2,000
Common Stock, par value (in dollars per share)	$ 1	$ 1
Common Stock, shares authorized (in shares)	5,000,000	5,000,000
Common Stock, shares issued (in shares)	5,000,000	5,000,000
Net unrealized gains on investments, income tax	$ 195,929,000	$ (367,217,000)
Net unrealized (losses) gains relating to other-than-temporary impaired investments for which a portion has been recognized in earnings, income tax	410,000	(6,054,000)
Accumulated loss - derivatives, income tax	$ (1,136,000)	$ (2,000)