XML 85 R62.htm IDEA: XBRL DOCUMENT v3.20.4
Property, plant and equipment - Owned Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period $ 2,940,777  
Value at end of period 3,052,060 $ 2,940,777
Buildings, plant installations and machinery    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 2,572,455  
Value at end of period 2,448,736 2,572,455
Plants under construction    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 155,871  
Value at end of period 386,905 155,871
Ocean going vessels    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 176,499  
Value at end of period 182,173 176,499
Other    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 35,952  
Value at end of period 34,246 35,952
Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 5,299,801 5,070,619
Additions 370,136 330,636
Disposals and other 55,139 101,454
Transfers   0
Value at end of period 5,614,798 5,299,801
Cost | Buildings, plant installations and machinery    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 4,787,515 4,698,142
Additions 116,850 150,570
Disposals and other 42,453 61,197
Transfers   0
Value at end of period 4,861,912 4,787,515
Cost | Plants under construction    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 155,871 0
Additions 231,034 118,249
Disposals and other 0 0
Transfers   37,622
Value at end of period 386,905 155,871
Cost | Plants under construction | Geismar 3 Facility    
Reconciliation of changes in property, plant and equipment [abstract]    
Transfers   19,000
Cost | Ocean going vessels    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 201,947 183,419
Additions 20,838 57,479
Disposals and other 12,686 38,951
Transfers   0
Value at end of period 210,099 201,947
Cost | Other    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 154,468 189,058
Additions 1,414 4,338
Disposals and other 0 1,306
Transfers   (37,622)
Value at end of period 155,882 154,468
Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period (2,359,024) (2,213,353)
Disposals and other (39,688) (96,386)
Depreciation 243,402 242,057
Value at end of period (2,562,738) (2,359,024)
Accumulated depreciation | Buildings, plant installations and machinery    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period (2,215,060) (2,047,735)
Disposals and other (31,058) (63,169)
Depreciation 229,174 230,494
Value at end of period (2,413,176) (2,215,060)
Accumulated depreciation | Plants under construction    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period 0 0
Disposals and other 0 0
Depreciation 0 0
Value at end of period 0 0
Accumulated depreciation | Ocean going vessels    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period (25,448) (48,426)
Disposals and other (8,601) (31,620)
Depreciation 11,079 8,642
Value at end of period (27,926) (25,448)
Accumulated depreciation | Other    
Reconciliation of changes in property, plant and equipment [abstract]    
Value at beginning of period (118,516) (117,192)
Disposals and other (29) (1,597)
Depreciation 3,149 2,921
Value at end of period $ (121,636) $ (118,516)