Noncontrolling Interests Property Partnerships (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Activity of Noncontrolling Interests [Roll Forward]
Beginning Balance	$ 1,602,467
Capital contributions	629	468
Net income	15,208	4,354
Ending Balance	1,599,502
Property Partnerships Member
Activity of Noncontrolling Interests [Roll Forward]
Beginning Balance	1,602,467	726,132
Capital contributions	629	468
Net income	12,980	2,586
Distributions	(16,574)	(4,093)
Ending Balance	$ 1,599,502	$ 725,093

Minority Interest Distributions Limited Partnerships.

No definition available.

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- Definition

Carrying amount of the equity interests owned by noncontrolling partners of a limited partnership included in the entity's consolidated financial statements.

+ References

No definition available.

+ Details

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- Details

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- Definition

Amount after tax of income (loss) attributable to nonredeemable noncontrolling partner of a limited partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.19)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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- Definition

Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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