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Redeemable Noncontrolling Interest (Details) $ in Millions | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2015 USD ($) | Dec. 31, 2017 USD ($) vote shares | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Apr. 01, 2021 installment | Apr. 01, 2018 installment | Apr. 01, 2015 USD ($) installment | Dec. 31, 2014 USD ($)
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Installments Related to Stockholders Agreement | installment |  |  |  |  |  |  |  |  | 2 |
Number of stockholder votes to approve actions | vote |  | 2 |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Carrying Amount | $ 464.9 | $ 503.7 | [1] | $ 483.7 | [1] | $ 464.9 |  |  |  | $ 0.0
Fair value at date of acquisition |  | 0.0 |  | 0.0 |  |  |  |  | $ 411.5 |
Net income attributable to NCI | 32.9 | 5.9 |  | 26.2 |  | 32.9 |  |  |  |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest | (1.1) | 2.3 |  | (3.2) |  | $ (1.1) |  |  |  |
Stock Issued During Period, Value, Stock Options Exercised Attributable to Redeemable Noncontrolling Interest | 0.0 | 3.4 |  | 0.0 |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests | (12.6) | 0.0 |  | 0.0 |  |  |  |  |  |
Adjustment to carrying amount of redeemable noncontrolling interest | $ 34.2 | $ 8.4 |  | $ (4.2) |  |  |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Installments Related to Stockholders Agreement | installment |  |  |  |  |  |  | 1 | 1 |  |
ARX Holding Corp. |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Equity interest percentage | 69.20% | 69.00% |  | 69.20% |  | 69.20% |  |  | 5.00% |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | shares |  | 22,550 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |  | $ 32.5 |  |  |  |  |  |  |  |
ARX Holding Corp. | Forecast |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Equity interest percentage |  |  |  |  |  |  | 100.00% | 80.00% |  |
Lower Limit |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Multiple for determining purchase price of shares |  | 1.0 |  |  |  |  |  |  |  |
Upper Limit |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Multiple for determining purchase price of shares |  | 2.0 |  |  |  |  |  |  |  |
[1] | See Note 15 – Redeemable Noncontrolling Interest for further discussion.

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- Definition Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 16(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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- Definition Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569655-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4616395-111683 + Details
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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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