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Stock-based Compensation (Schedule of Restricted Stock Unit Grants For The Period) (Details) - Restricted Stock Units (RSUs) | 3 Months Ended
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Dec. 31, 2016 installment shares
Granted, shares | 1,391,000 |
TSR Units [Member] |  |
Granted, shares | 356,000 | [1]
Performance-Based |  |
Number of equal annual installments | installment | 3 |
Time-based Award [Member] |  |
Granted, shares | 719,000 | [2]
Number of equal annual installments | installment | 3 |
Maximum [Member] | TSR Units [Member] |  |
Granted, shares | 495,000 | [1]
Maximum [Member] | Performance-Based |  |
Granted, shares | 316,000 |
[1] | The TSR units were granted to our executive officers pursuant to the terms described below.
[2] | The service-based RSUs were granted to employees and our executive officers. All service-based RSUs will vest in three substantially equal annual installments on or about the anniversary of the date of grant.

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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