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Noncontrolling Interests Property Partnerships (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Activity of Noncontrolling Interests [Roll Forward] |  |  |  |  |
Beginning Balance |  |  | $ 1,530,647,000 |  |
Capital contributions |  |  | (133,072,000) |  | $ (5,040,000)
Net income | $ 15,203,000 | $ 6,814,000 | 19,627,000 |  | 17,278,000
Accumulated other comprehensive income (loss) | 2,738,000 | 8,681,000 | 2,520,000 |  | 24,108,000
Ending Balance | 1,653,981,000 |  | 1,653,981,000 |  |
Property Partnerships Member |  |  |  |  |
Activity of Noncontrolling Interests [Roll Forward] |  |  |  |  |
Beginning Balance |  |  | 1,530,647,000 |  | 1,574,400,000
Capital contributions |  |  | 133,072,000 | [1] | 3,720,000
Net income |  |  | 19,627,000 |  | 17,278,000
Accumulated other comprehensive income (loss) |  |  | (2,416,000) |  | (16,547,000)
Distributions |  |  | (26,949,000) |  | (25,914,000)
Ending Balance | 1,653,981,000 | $ 1,552,937,000 | 1,653,981,000 |  | $ 1,552,937,000
767 Fifth Avenue (the General Motors Building) | Property Partnerships Member |  |  |  |  |
Activity of Noncontrolling Interests [Roll Forward] |  |  |  |  |
Ending Balance | $ 109,576 |  | $ 109,576 |  |
[1] | Includes the contribution of the remaining unpaid principal balance of the members’ notes payable totaling $109,576 to equity in the consolidated entity that owns 767 Fifth Avenue (the General Motors Building).

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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=63488584&loc=d3e20235-122688 + Details
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- Definition Amount after tax of other comprehensive income (loss) attributable to noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569643-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 + 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 -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: 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=66902209&loc=d3e3255-108585 + Details
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