CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 1,520	$ 1,491
Prepayments and other current assets	247	155
Property and equipment, net	15,892	16,045	[1]
Deferred charges and other assets	(851)	(383)	[2],[3]
Accounts payable	416	399
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	14	14
Prepayments and other current assets	6	6
Property and equipment, net	181	137
Deferred charges and other assets	(31)	(35)
Accounts payable	84	41
Accrued Liabilities, Current	2	1
Liabilities, Other than Long-term Debt, Noncurrent	$ 9	$ 5

[1] Non-operating land assets previously considered as failed sale-leaseback financing obligations were determined to qualify for sale-leaseback accounting under ASC 842 and are now recognized as operating lease liabilities with corresponding ROU assets.

[2] ⁽²⁾  Operating leases previously considered as off-balance sheet obligations are now recognized as operating lease liabilities with corresponding ROU assets.

[3] ⁽³⁾  Accruals associated with future obligations for leases not in use have been applied against the carrying amount of the ROU assets.