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Non-Controlling Interest Non-Controlling Interest (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Jun. 30, 2018 | Jun. 30, 2019 | Jan. 01, 2019 | Dec. 31, 2018
Noncontrolling Interest [Line Items] |  |  |  |  |
Non-controlling Interest, Ownership Percentage by Parent |  |  | 60.00% | 60.00% |
Restricted Cash, Current |  | $ 0 | $ 0 |  | $ 13,970,000
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders |  | 21,332,000 |  |  |
Payments of Ordinary Dividends, Noncontrolling Interest | $ 20,000,000.0 |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  | 40.00% |
Non-controlling Interest [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders |  | $ 21,332,000 |  |  |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765 + Details
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