Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Distributions in Excess of Net Earnings [Member]	Non-controlling Interests [Member]
Balance at Dec. 31, 2017	$ 18,705,741	$ 68,948	$ 5,322	$ 19,363,007	$ (901,658)	$ (2,904,461)	$ 3,074,583
Balance, shares at Dec. 31, 2017			532,186
Consolidated net earnings	391,959	0	$ 0	0	0	367,378	24,581
Effect of equity compensation plans	6,057	0	$ 9	(5,357)	0	0	11,405
Effect of equity compensation plans, shares			921
Capital contributions	850	0	$ 0	0	0	0	850
Redemption of noncontrolling interests	(15,776)	0	0	(1,131)	0	0	(14,645)
Foreign currency translation gains, net	4,770	0	0	0	4,420	0	350
Unrealized losses on derivative contracts, net	(6,287)	0	0	0	(6,105)	0	(182)
Reallocation of equity	0	0	0	(52,505)	0	0	52,505
Dividend ($0.53 and $0.48 per common share for 2019 and 2018) and other	(299,194)	0	0	(105)	0	(257,687)	(41,402)
Balance at Mar. 31, 2018	18,788,120	68,948	$ 5,331	19,303,909	(903,343)	(2,794,770)	3,108,045
Balance, shares at Mar. 31, 2018			533,107
Balance at Dec. 31, 2018	$ 25,800,888	68,948	$ 6,296	25,685,987	(1,084,671)	(2,378,467)	3,502,795
Balance, shares at Dec. 31, 2018	629,616		629,616
Consolidated net earnings	$ 373,765	0	$ 0	0	0	348,546	25,219
Effect of equity compensation plans	22,029	0	$ 7	(1,198)	0	0	23,220
Effect of equity compensation plans, shares			764
Capital contributions	6,538	0	$ 0	0	0	0	6,538
Redemption of noncontrolling interests	(40,223)	0	$ 4	2,980	0	0	(43,207)
Redemption of noncontrolling interests, shares			363
Contribution to Brazil venture	(12,630)	0	$ 0	0	0	0	(12,630)
Foreign currency translation gains, net	60,080	0	0	0	58,019	0	2,061
Unrealized losses on derivative contracts, net	(2,633)	0	0	0	(2,554)	0	(79)
Reallocation of equity	0	0	0	(33,304)	0	0	33,304
Dividend ($0.53 and $0.48 per common share for 2019 and 2018) and other	(383,753)	0	0	(16)	0	(336,094)	(47,643)
Balance at Mar. 31, 2019	$ 25,824,061	$ 68,948	$ 6,307	$ 25,654,449	$ (1,029,206)	$ (2,366,015)	$ 3,489,578
Balance, shares at Mar. 31, 2019	630,743		630,743