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Debt Senior Notes (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 | Mar. 31, 2016 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loss on early debt extinguishment | $ 29.5 |  | $ (8.3) | $ (59.5) | $ 29.5 |  | $ (29.5) | $ (67.8) | $ (1.6)
30-day grace period |  |  |  |  |  | 30-day grace period |  |  |
Interest Expense |  | $ 126.2 |  |  | $ 150.4 |  | $ 298.6 | $ 465.4 | $ 426.6
Term Loan Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate - percentage | 4.50% |  |  |  | 4.50% |  | 4.50% |  |
6.00% Senior Notes due November 2018 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate - percentage | 6.00% |  |  |  | 6.00% |  | 6.00% |  |
6.50% Senior Notes due September 2020 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate - percentage | 6.50% |  |  |  | 6.50% | 6.50% | 6.50% |  |
Interest Expense |  |  |  |  |  |  | $ 21.1 |  |
6.25% Senior Notes due November 2021 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Stated interest rate - percentage | 6.25% |  |  |  | 6.25% | 6.25% | 6.25% |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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