Amount of increase to additional paid in capital due to the sale of interests in investments, net of tax.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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Costs and payments related to employee benefits and equity-based compensation, such as pension expense and contributions, other postretirement benefits expense and payments, stock or unit options expense, and amortization of restricted stock or unit.

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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Number of shares issued which are neither cancelled nor held in the treasury.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Number of new stock issued during the period.

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Number of shares related to Restricted Stock Award forfeited during the period.

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Number of share options (or share units) exercised during the current period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Value of stock related to Restricted Stock Awards forfeited during the period.

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Value of stock issued as a result of the exercise of stock options.

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Condensed Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Thousands, except Share data	Retained Earnings [Member] USD ($)	AOCI Attributable to Parent [Member] USD ($)	Preferred Stock [Member] USD ($)	Common Stock [Member] USD ($)	Additional Paid-in Capital [Member] USD ($)	Parent [Member] USD ($)	Noncontrolling Interest [Member] USD ($)	Series H Preferred Stock [Member]	Series I Preferred Stock [Member]	Series J Preferred Stock [Member]	Series K Preferred Stock [Member]	Total USD ($)
Balance at Dec. 31, 2013	$ (996,058)	$ (64,982)	$ 102	$ 4,097	$ 5,689,258	$ 4,632,417	$ 137,109					$ 4,769,526
Balance (in Shares) at Dec. 31, 2013			102,000	409,731,000
Net income	87,000					87,000	8,860					95,860us-gaap_ProfitLoss
Change in unrealized gain on marketable securities		(3,678)				(3,678)						(3,678)
Change in foreign currency translation adjustment		(8,210)				(8,210)	(178)					(8,388)
Redeemable noncontrolling interests							(1,693)					(1,693)
Dividends	(106,937)					(106,937)						(106,937)us-gaap_Dividends
Distributions to noncontrolling interests							(18,979)					(18,979)
Issuance of common stock				7	11,444	11,451						11,451
Issuance of common stock (in Shares)				697,000
Surrender of restricted stock				(1)	(2,838)	(2,839)						(2,839)
Surrender of restricted stock (in Shares)				(123,000)
Exercise of common stock options				2	3,301	3,303						3,303
Exercise of common stock options (in Shares)				201,000
Amortization of equity awards					4,704	4,704						4,704
Balance at Mar. 31, 2014	(1,015,995)	(76,870)	102	4,105	5,705,869	4,617,211	125,119					4,742,330
Balance (in Shares) at Mar. 31, 2014			102,000	410,506,000
Balance at Dec. 31, 2014	(1,006,578)	45,122	102	4,118	5,732,021	4,774,785	126,980					4,901,765
Balance (in Shares) at Dec. 31, 2014			102,000	411,820,000
Contributions from noncontrolling interests							66,163					66,163
Net income	310,342					310,342	2,397					312,739us-gaap_ProfitLoss
Change in unrealized gain on marketable securities		15,718				15,718						15,718
Change in unrealized loss on interest rate swaps		(352)				(352)						(352)
Change in foreign currency translation adjustment		(9,532)				(9,532)						(9,532)
Redeemable noncontrolling interests							(1,522)					(1,522)
Dividends	(113,613)					(113,613)						(113,613)us-gaap_Dividends
Distributions to noncontrolling interests							(260)					(260)
Issuance of common stock				5	2,975	2,980						2,980
Issuance of common stock (in Shares)				539,000
Surrender of restricted stock				(2)	(5,170)	(5,172)						(5,172)
Surrender of restricted stock (in Shares)				(204,000)
Exercise of common stock options				6	10,252	10,258						10,258
Exercise of common stock options (in Shares)				554,000
Sale of interests in investments, net of tax of $16 million					23,336	23,336						23,336
Amortization of equity awards					4,424	4,424						4,424
Balance at Mar. 31, 2015	$ (809,849)	$ 50,956	$ 102	$ 4,127	$ 5,767,838	$ 5,013,174	$ 193,758					$ 5,206,932
Balance (in Shares) at Mar. 31, 2015			102,000	412,709,000				70,000	16,000	9,000	7,000