CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Common Stock	Preferred Stock	Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings (Accumulated Deficit)	Treasury Stock
Shares, issued, beginning balance at Dec. 31, 2018		445,016,234	20,000
Total equity, beginning balance at Dec. 31, 2018	$ 6,579,543	$ 4,450	$ 0	$ 7,615,138	$ (188,239)	$ 0	$ (851,806)
Net income	337,208	0	0	0	0	337,208	0
Other comprehensive loss	$ (81,285)	0	0	0	(81,285)	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ (275)	0	0	0	0	(275)	0
Common Stock Issued During Period, Value, Other	$ 6,260	0	0	(24,779)	0	0	31,039
Common stock dividends paid (in dollars per share)	$ 0.86
Common Stock Dividends	$ (354,304)	0	0	(17,438)	0	(336,866)	0
Other, net	(45,074)	$ 0	$ 0	(45,074)	0	0	0
Shares, issued, ending balance at Mar. 31, 2019		445,016,234	20,000
Total equity, ending balance at Mar. 31, 2019	6,442,006	$ 4,450	$ 0	7,527,847	(269,524)	0	(820,767)
Shares, issued, beginning balance at Dec. 31, 2018		445,016,234	20,000
Total equity, beginning balance at Dec. 31, 2018	6,579,543	$ 4,450	$ 0	7,615,138	(188,239)	0	(851,806)
Net income	958,326
Other comprehensive loss	(232,865)
Shares, issued, ending balance at Sep. 30, 2019		445,016,234	20,000
Total equity, ending balance at Sep. 30, 2019	6,218,906	$ 4,450	$ 0	7,448,099	(421,104)	0	(812,539)
Shares, issued, beginning balance at Mar. 31, 2019		445,016,234	20,000
Total equity, beginning balance at Mar. 31, 2019	6,442,006	$ 4,450	$ 0	7,527,847	(269,524)	0	(820,767)
Net income	311,963	0	0	0	0	311,963	0
Other comprehensive loss	$ (66,872)	0	0	0	(66,872)	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ (275)	0	0	0	0	(275)	0
Common Stock Issued During Period, Value, Other	$ 11,726	0	0	6,335	0	0	5,391
Common stock dividends paid (in dollars per share)	$ 0.865
Common Stock Dividends	$ (357,416)	0	0	(45,728)	0	(311,688)	0
Other, net	7,004	$ 0	$ 0	7,004	0	0	0
Shares, issued, ending balance at Jun. 30, 2019		445,016,234	20,000
Total equity, ending balance at Jun. 30, 2019	6,348,136	$ 4,450	$ 0	7,495,458	(336,396)	0	(815,376)
Net income	309,155	0	0	0	0	309,155	0
Other comprehensive loss	$ (84,708)	0	0	0	(84,708)	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ (275)	0	0	0	0	(275)	0
Common Stock Issued During Period, Value, Other	$ 7,075	0	0	4,238	0	0	2,837
Common stock dividends paid (in dollars per share)	$ 0.89
Common Stock Dividends	$ (367,840)	0	0	(58,960)	0	(308,880)	0
Other, net	7,363	$ 0	$ 0	7,363	0	0	0
Shares, issued, ending balance at Sep. 30, 2019		445,016,234	20,000
Total equity, ending balance at Sep. 30, 2019	6,218,906	$ 4,450	$ 0	7,448,099	(421,104)	0	(812,539)
Shares, issued, beginning balance at Dec. 31, 2019		445,016,234	20,000
Total equity, beginning balance at Dec. 31, 2019	6,225,951	$ 4,450	$ 0	7,403,895	(374,000)	0	(808,394)
Net income	(141,857)	0	0	0	0	(141,857)	0
Other comprehensive loss	$ (125,386)	0	0	0	(125,386)	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ (275)	$ 0	0	(275)	0	0	0
Common Stock Issued During Period, Shares, Other		0
Common Stock Issued During Period, Value, Other	$ 7,089	$ 0	0	(9,286)	0	0	16,375
Common stock dividends paid (in dollars per share)	$ 0.935
Common Stock Dividends	$ (386,931)	0	0	(386,931)	0	0	0
Other, net	(17,950)	$ 0	$ 0	(17,950)	0	0	0
Shares, issued, ending balance at Mar. 31, 2020		445,016,234	20,000
Total equity, ending balance at Mar. 31, 2020	5,560,641	$ 4,450	$ 0	6,989,453	(499,386)	(141,857)	(792,019)
Shares, issued, beginning balance at Dec. 31, 2019		445,016,234	20,000
Total equity, beginning balance at Dec. 31, 2019	6,225,951	$ 4,450	$ 0	7,403,895	(374,000)	0	(808,394)
Net income	304,780
Other comprehensive loss	(156,618)
Shares, issued, ending balance at Sep. 30, 2020		474,916,234	20,000
Total equity, ending balance at Sep. 30, 2020	6,146,112	$ 4,749	$ 0	7,448,484	(530,618)	0	(776,503)
Cumulative effect adjustment for adoption of ASU 2016-02, “Leases (Topic 842)”	(67)	$ 0	$ 0	0	0	(67)	0
Shares, issued, beginning balance at Mar. 31, 2020		445,016,234	20,000
Total equity, beginning balance at Mar. 31, 2020	5,560,641	$ 4,450	$ 0	6,989,453	(499,386)	(141,857)	(792,019)
Net income	134,321	0	0	0	0	134,321	0
Other comprehensive loss	$ (25,517)	0	0	0	(25,517)	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ (275)	$ 0	0	(275)	0	0	0
Common Stock Issued During Period, Shares, Other		29,900,000
Common Stock Issued During Period, Value, Other	$ 949,867	$ 299	0	939,038	0	0	10,530
Common stock dividends paid (in dollars per share)	$ 0.935
Common Stock Dividends	$ (387,037)	0	0	(387,037)	0	0	0
Other, net	8,652	$ 0	$ 0	8,652	0	0	0
Shares, issued, ending balance at Jun. 30, 2020		474,916,234	20,000
Total equity, ending balance at Jun. 30, 2020	6,240,652	$ 4,749	$ 0	7,549,831	(524,903)	(7,536)	(781,489)
Net income	312,316	0	0	0	0	312,316	0
Other comprehensive loss	$ (5,715)	0	0	0	(5,715)	0	0
Preferred stock, dividends paid (in dollars per share)	$ 13.75
Preferred stock dividends	$ (275)	$ 0	0	0	0	(275)	0
Common Stock Issued During Period, Shares, Other		0
Common Stock Issued During Period, Value, Other	$ 5,789	$ 0	0	803	0	0	4,986
Common stock dividends paid (in dollars per share)	$ 0.935
Common Stock Dividends	$ (415,453)	0	0	(110,948)	0	(304,505)	0
Other, net	8,798	$ 0	$ 0	8,798	0	0	0
Shares, issued, ending balance at Sep. 30, 2020		474,916,234	20,000
Total equity, ending balance at Sep. 30, 2020	$ 6,146,112	$ 4,749	$ 0	$ 7,448,484	$ (530,618)	$ 0	$ (776,503)