Senior Notes (Tables)

3 Months Ended

Mar. 31, 2022

Senior Notes [Abstract]

Schedule Of Outstanding Senior Notes

				March 31, 2022				December 31, 2021
				Consolidated				Consolidated
			Principal	Balance Sheet		Market		Balance Sheet		Market
(Dollars in thousands)	Date Issued	Date Due	Amounts	Amount		Value		Amount		Value
4.868% Senior notes	06/05/2014	06/01/2044	400,000	$	397,343	$	437,148	$	397,314	$	503,840
3.5% Senior notes	10/07/2020	10/15/2050	1,000,000	$	980,178	$	895,420	$	980,046	$	1,054,520
3.125% Senior notes	10/04/2021	10/15/2052	1,000,000	$	968,626	$	832,780	$	968,440	$	983,140
			2,400,000	$	2,346,147	$	2,165,348	$	2,345,800	$	2,541,500

Schedule Of Interest Expense Incurred In Connection With Senior Notes

	Three Months Ended
	March 31,
(Dollars in thousands)	2022		2021
Interest expense incurred 4.868% Senior notes	$	4,868	$	4,868
Interest expense incurred 3.5% Senior notes	$	8,807	$	8,805
Interest expense incurred 3.125% Senior notes	$	7,913	$	-
	$	21,588	$	13,673