CONSOLIDATED STATEMENTS OF SHAREOWNER'S EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In- Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total shareowners' equity
Balance (Predecessor) at Dec. 31, 2013		$ 44,388	$ 606,934	$ (200,416)	$ 2,769,822	$ 494,066	$ 3,714,794
Increase (decrease) in shareowners' equity
Net income | Predecessor	$ 384,875				384,875		384,875
Other comprehensive income (loss) | Predecessor	924,010					924,010	924,010
Total comprehensive income (loss) | Predecessor	1,308,885						1,308,885
Cash dividends ($0.92 per share) | Predecessor					(72,697)		(72,697)
Noncontrolling interests | Predecessor	0
Stock-based compensation | Predecessor	13,902		(809)	14,711			13,902
Balance (Predecessor) at Dec. 31, 2014		44,388	606,125	(185,705)	3,082,000	1,418,076	4,964,884
Increase (decrease) in shareowners' equity
Net income | Predecessor	1,509				1,509		1,509
Other comprehensive income (loss) | Predecessor	465,968					465,968	465,968
Total comprehensive income (loss) | Predecessor	467,477						467,477
Stock-based compensation | Predecessor	1,550		1,550				1,550
Balance (Predecessor) at Jan. 31, 2015		44,388	607,675	(185,705)	3,083,509	1,884,044	$ 5,433,911
Balance (Successor) at Jan. 31, 2015	5,554,059	0	5,554,059	0	0	0
Increase (decrease) in shareowners' equity
Net income | Successor	268,299				268,299
Other comprehensive income (loss) | Successor	(1,241,134)					(1,241,134)
Total comprehensive income (loss) | Successor	(972,835)
Stock-based compensation | Successor	0
Balance (Successor) at Dec. 31, 2015	4,581,224	0	5,554,059	0	268,299	(1,241,134)
Increase (decrease) in shareowners' equity
Net income | Successor	393,029				393,029
Other comprehensive income (loss) | Successor	586,611					586,611
Total comprehensive income (loss) | Successor	979,640
Stock-based compensation | Successor	0
Dividends to parent | Successor	(89,343)				(89,343)
Balance (Successor) at Dec. 31, 2016	$ 5,471,521	$ 0	$ 5,554,059	$ 0	$ 571,985	$ (654,523)