CONSOLIDATED CONDENSED STATEMENTS OF SHAREOWNER'S EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In- Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2017	$ 7,127,199	$ 0	$ 5,554,059	$ 1,560,444	$ 12,696
Increase (decrease) in shareowners' equity
Net income	74,112			74,112
Other comprehensive income	(576,444)				(576,444)
Comprehensive income (loss)	(502,332)
Dividends to parent	(140,000)			(140,000)
Ending Balance at Mar. 31, 2018	6,392,342	0	5,554,059	1,412,583	(574,300)
Beginning Balance at Dec. 31, 2018	5,767,734	0	5,554,059	1,639,441	(1,425,766)
Increase (decrease) in shareowners' equity
Net income	138,284			138,284
Other comprehensive income	1,141,817				1,141,817
Comprehensive income (loss)	1,280,101
Ending Balance at Mar. 31, 2019	$ 6,997,027	$ 0	$ 5,554,059	$ 1,726,917	$ (283,949)