CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 1,790	$ 2,160
Accounts receivable, net	654	604
Materials and supplies, net	479	474
Restricted cash accounts and investments	558	551
Other current assets	159	159
Total current assets	3,640	3,948
Property and equipment	24,281	25,811
Less accumulated depreciation	(5,434)	(5,403)
Property and equipment, net	18,847	20,408
Contract intangible assets	608	795
Deferred income taxes, net	20	66
Other assets	990	448
Total assets	24,105	25,665
Liabilities and equity
Accounts payable	311	269
Accrued income taxes	64	70
Debt due within one year	568	373
Other current liabilities	781	746
Total current liabilities	1,724	1,458
Long-term debt	8,693	9,605
Deferred income taxes, net	266	64
Other long-term liabilities	1,555	1,424
Total long-term liabilities	10,514	11,093
Commitments and contingencies
Shares, CHF 0.10 par value, 639,674,422 authorized, 142,365,398 conditionally authorized, 617,970,525 issued and 611,871,374 outstanding at December 31, 2019, and 638,285,574 authorized, 143,754,246 conditionally authorized, 610,581,677 issued and 609,649,291 outstanding at December 31, 2018	59	59
Additional paid-in capital	13,424	13,394
Accumulated deficit	(1,297)	(67)
Accumulated other comprehensive loss	(324)	(279)
Total controlling interest shareholders' equity	11,862	13,107
Noncontrolling interest	5	7
Total equity	11,867	13,114
Total liabilities and equity	$ 24,105	$ 25,665