Quarterly report pursuant to Section 13 or 15(d)

Leases - Supplemental balance sheet information related to leases (Details)

v3.19.1
Leases - Supplemental balance sheet information related to leases (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Leases      
Operating lease right-of-use assets $ 476    
Operating lease right-of-use assets location us-gaap:OtherAssetsNoncurrent    
Current operating lease liabilities $ 53    
Current operating lease liabilities location us-gaap:OtherLiabilitiesCurrent    
Operating lease liabilities $ 439    
Operating lease liabilities location us-gaap:OtherLiabilitiesNoncurrent    
Total operating lease liabilities $ 492    
Property and equipment, at cost 3,562 $ 3,394 $ 3,765
Accumulated depreciation (1,357) $ (1,281) (1,296)
Property and equipment, net 2,205   $ 2,469
Current finance lease liabilities $ 10    
Current finance lease liabilities location us-gaap:OtherLiabilitiesCurrent    
Finance lease noncurrent liabilities $ 119    
Finance lease liabilities location us-gaap:OtherLiabilitiesNoncurrent    
Total finance lease liabilities $ 129    
Finance Leases      
Leases      
Property and equipment, at cost 482    
Accumulated depreciation (73)    
Property and equipment, net $ 409