Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member
Stockholders' equity		$ (3,034,773)	$ (2,870,888)	$ (3,695,500)	$ (3,664,737)	$ (3,687,975)	$ (3,471,991)
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity		$ (3,923,113)	$ (3,809,564)	(4,571,860)	$ (4,674,918)	$ (4,630,480)	$ (4,341,212)
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity	[1]			11,432
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity	[1]			$ 11,432

[1] The Company adopted Accounting Standards Update (“ASU”) 2016-13, Measurement of Credit Losses on Financial Instruments, during the first quarter of 2020. Refer to the recent accounting pronouncements footnote. (2)The Company adopted ASU 2016-02, Leases, and ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, during the first quarter of 2019.