Supplemental Data - Statements of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Supplemental Data - Statements of Cash Flows
Cash paid for interest (including capitalized interest)			$ 737,311	$ 764,540
Cash received for interest			38,101	10,126
Cash paid for income taxes			26,304	27,280
Capitalized interest	[1]		743,864	761,842
Master Transaction Agreement, net of deferred tax of $166,161	[2]		497,145
Employee benefits paid in Class A common stock			27,004	$ 27,322
Deferred Other Tax Expense (Benefit)		$ 166,161	$ 166,161

[1] See Note 2 for further information.

[2] See Note 1 for further information.