Consolidated Statements of Equity (USD $)	Total	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss) Income	Noncontrolling Interest	Series A Preferred Stock	Common Stock Class A	Common Stock Class B
Balance at Dec. 31, 2010
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A shares in exchange for Senior Notes, Shares								9,774,039
Balance at Jan. 31, 2011	$ 1,874,260,000	$ 689,004,000	$ 673,875,000	$ (259,000)	$ (94,429,000)	$ 330,912,000	$ 220,000,000	$ 48,084,000	$ 7,073,000
Balance, Shares at Jan. 31, 2011				21,000			4,400,000	144,252,000	21,219,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss), net of $4,567, $9,785 and $16,847 attributable to redeemable noncontrolling interest	3,999,000		(86,486,000)			90,485,000
Other comprehensive income (loss), net of tax	(24,981,000)				(26,031,000)	1,050,000
Purchase of treasury stock	(1,670,000)			(1,670,000)
Purchase of treasury stock, Shares	90,104			90,000
Conversion of Class B to Class A shares	0							95,000	(95,000)
Conversion of Class B to Class A shares, Shares								284,000	(284,000)
Issuance of Class A shares in exchange for Senior Notes	48,742,000	47,594,000						1,148,000
Issuance of Class A shares in exchange for Senior Notes, Shares								3,444,000
Restricted stock vested	0	(114,000)						114,000
Restricted stock vested, Shares								343,000
Exercise of stock options	195,000	136,000		55,000				4,000
Exercise of stock options, shares				(3,000)				13,000
Preferred stock dividends	(15,400,000)		(15,400,000)				(15,400,000)
Stock-based compensation	12,585,000	12,585,000
Excess income tax deficiency from stock-based compensation	(812,000)	(812,000)
Redeemble noncontrolling interest adjustment	(6,887,000)	(6,887,000)
Acquisition of partners' noncontrolling interest in consolidated subsidiaries	(20,953,000)	(518,000)				(20,435,000)
Contributions from noncontrolling interests	6,087,000					6,087,000
Distributions to noncontrolling interests	(89,644,000)					(89,644,000)
Change to equity method of accounting for subsidiaries	33,598,000					33,598,000
Other changes in noncontrolling interests	(51,000)					(51,000)
Balance at Jan. 31, 2012	1,751,872,000	740,988,000	571,989,000	(1,874,000)	(120,460,000)	284,806,000	220,000,000	49,445,000	6,978,000
Balance, Shares at Jan. 31, 2012				108,000			4,400,000	148,336,000	20,935,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss), net of $4,567, $9,785 and $16,847 attributable to redeemable noncontrolling interest	46,056,000		36,425,000			9,631,000
Other comprehensive income (loss), net of tax	17,230,000				17,257,000	(27,000)
Purchase of treasury stock	(1,963,000)			(1,963,000)
Purchase of treasury stock, Shares	129,568			129,000
Conversion of Class B to Class A shares	0							233,000	(233,000)
Conversion of Class B to Class A shares, Shares								700,000	(700,000)
Issuance of Class A shares in exchange for Series A preferred stock	(22,370,000)	201,530,000	(19,069,000)				(209,448,000)	4,617,000
Issuance of Class A shares in exchange for Series A preferred stock, shares							(4,189,000)	13,852,000
Restricted stock vested	0	(173,000)						173,000
Restricted stock vested, Shares								519,000
Exercise of stock options	8,368,000	4,531,000		3,729,000				108,000
Exercise of stock options, shares				(230,000)				322,000
Preferred stock dividends	(13,060,000)		(13,060,000)				(13,060,000)
Stock-based compensation	14,751,000	14,751,000
Excess income tax deficiency from stock-based compensation	(961,000)	(961,000)
Redeemble noncontrolling interest adjustment	(8,424,000)	(8,424,000)
Acquisition of partners' noncontrolling interest in consolidated subsidiaries	(27,335,000)	(20,197,000)				(7,138,000)
Contributions from noncontrolling interests	1,886,000					1,886,000
Distributions to noncontrolling interests	(27,680,000)					(27,680,000)
Change to equity method of accounting for subsidiaries	(724,000)					(724,000)
Other changes in noncontrolling interests	925,000					925,000
Balance at Jan. 31, 2013	1,738,571,000	932,045,000	576,285,000	(108,000)	(103,203,000)	261,679,000	10,552,000	54,576,000	6,745,000
Balance, Shares at Jan. 31, 2013				7,000			211,000	163,729,000	20,235,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss), net of $4,567, $9,785 and $16,847 attributable to redeemable noncontrolling interest	(53,943,000)		(5,307,000)			(48,636,000)
Other comprehensive income (loss), net of tax	26,655,000				26,621,000	34,000
Purchase of treasury stock	(3,167,000)			(3,167,000)
Purchase of treasury stock, Shares	179,907			180,000
Conversion of Class B to Class A shares	0							20,000	(20,000)
Conversion of Class B to Class A shares, Shares								62,000	(62,000)
Issuance of Class A shares in exchange for Series A preferred stock	0	5,368,000					(5,489,000)	121,000
Issuance of Class A shares in exchange for Series A preferred stock, shares							(110,000)	363,000
Redemption of Series A preferred stock	(5,063,000)						(5,063,000)
Redemption of Series A preferred stock, Shares							(101,000)
Proceeds from settlement of equity call hedge related to issuance of preferred stock	10,231,000	23,099,000		(12,868,000)
Proceeds from settlement of equity call hedge related to issuance of preferred stock, shares				765,000
Issuance of Class A shares in exchange for Senior Notes	194,345,000	189,786,000						4,559,000
Issuance of Class A shares in exchange for Senior Notes, Shares								13,679,000
Restricted stock vested	0	(202,000)						202,000
Restricted stock vested, Shares								600,000
Exercise of stock options	1,153,000	966,000		165,000				22,000
Exercise of stock options, shares	76,200			(10,000)				66,000
Preferred stock dividends	(185,000)		(185,000)				(185,000)
Stock-based compensation	16,197,000	16,197,000
Excess income tax deficiency from stock-based compensation	(133,000)	(133,000)
Redeemble noncontrolling interest adjustment	50,546,000	50,546,000
Acquisition of partners' noncontrolling interest in consolidated subsidiaries	(98,687,000)	(95,924,000)				(2,763,000)
Contributions from noncontrolling interests	80,339,000					80,339,000
Distributions to noncontrolling interests	(36,400,000)					(36,400,000)
Change to equity method of accounting for subsidiaries	5,660,000					5,660,000
Adjustment due to change in ownership of consolidated subsidiaries	0	(26,000,000)				26,000,000
Balance at Dec. 31, 2013	$ 1,926,119,000	$ 1,095,748,000	$ 570,793,000	$ (15,978,000)	$ (76,582,000)	$ 285,913,000	$ 0	$ 59,500,000	$ 6,725,000
Balance, Shares at Dec. 31, 2013				942,000			0	178,499,000	20,173,000