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Earnings (Loss) Per Common Share - Antidilutive Securities (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of antidilutive securities excluded from the calculation of earning per share (in shares)	16,549	11,626	16,322	11,578
Restricted stock units ("RSUs"), performance-based RSUs and leveraged stock units ("LSUs")
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of antidilutive securities excluded from the calculation of earning per share (in shares)	2,052	554	1,793	376
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of antidilutive securities excluded from the calculation of earning per share (in shares)	1,801	711	1,833	841
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of antidilutive securities excluded from the calculation of earning per share (in shares)	12,696	10,361	12,696	10,361

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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