Basis of Presentation and Summary of Significant Accounting Policies - Carrying Values and Fair Values of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Reported Value Measurement
Debt Instrument [Line Items]
Debt instruments, excluding capital lease obligations	$ 9,885,367	$ 9,617,491
Estimate of Fair Value Measurement
Debt Instrument [Line Items]
Debt instruments, excluding capital lease obligations	$ 9,273,864	$ 10,177,751

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

No definition available.

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant