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v3.20.4

Leases And Other Commitments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2019 | Dec. 31, 2017
Operating Leased Assets [Line Items] |  |  |  |  |
Stockholders' equity | $ 1,826.5 | $ 882.6 | $ 663.3 |  | $ 419.4
Operating lease right-of-use assets | 93.3 | 71.5 |  | $ 26.7 |
Finance lease right-of-use assets |  |  |  | 15.3 |
Operating lease liability | 118.3 |  |  | 40.4 |
Finance lease liability | 62.8 |  |  | $ 15.9 |
Asset retirement obligations | 4.5 | 2.6 |  |  |
Rent expense |  |  | 12.5 |  |
Amortization of operating lease right-of-use asset | 12.4 | 9.1 |  |  |
Purchase obligations | $ 335.6 |  |  |  |
Term of purchase obligations | 1 year |  |  |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |
Stockholders' equity |  |  | 2.1 |  |
Minimum |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |
Renewal term | 3 years |  |  |  |
Remaining lease terms | 1 year |  |  |  |
Maximum |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |
Renewal term | 5 years |  |  |  |
Remaining lease terms | 20 years |  |  |  |
Retained Earnings |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |
Stockholders' equity | $ (202.1) | $ (695.7) | (798.9) |  | $ (671.8)
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |
Stockholders' equity |  |  | 2.1 |  |
Retained Earnings | Accounting Standards Update 2016-02 | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |
Stockholders' equity |  |  | $ (2.1) |  |

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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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