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Income taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income taxes  
Schedule of components of earnings before income taxes

Year Ended December 31, 

2020

    

2019

2018

U.S.

$

(69)

$

77

$

(806)

Non-U.S.

(117)

(Loss) income before taxes

$

(69)

$

77

$

(923)

Schedule of Income tax expense / (benefit)

Year Ended December 31, 

    

2020

    

2019

2018

Current tax (benefit) expense

U.S.

$

(5)

$

5

$

Non-U.S.

(5)

5

Deferred tax benefit

U.S.

(17)

(2)

Non-U.S.

(46)

(17)

(48)

Income tax (benefit) expense

$

(22)

$

5

$

(48)

Schedule of reconciliation of the US statutory income tax rate to our effective income tax rate

Year Ended December 31, 

2020

    

2019

2018

U.S. statutory income tax rate

21

%

21

%

21

%

Expected income tax (benefit) expense at statutory rate

$

(14)

$

16

$

(194)

Non-deductible expenses

8

15

6

Tax on international operations

(1)

(45)

Change in valuation allowance

49

(108)

96

Base Erosion and Anti-Abuse Tax

(5)

5

Outside basis difference in assets held for sale

(39)

78

Tax credits

(3)

(1)

(9)

Non-deductible goodwill impairment

98

Remeasurement of previously held equity interest

(18)

Other

1

Income tax (benefit) expense

$

(22)

$

5

$

(48)

Effective income tax rate

32

%

6

%

5

%

Schedule of significant components of deferred tax assets and liabilities

Year Ended December 31, 

2020

    

2019

2018

Tax benefit of losses carried forward

$

209

$

219

$

222

Tax credits

93

82

91

Construction contract liabilities

89

77

Property and equipment

15

Trade and other payables

35

41

38

Employee benefits

52

41

49

Unrealized gains and losses

20

6

6

Other

1

18

21

Deferred tax assets

410

496

519

Valuation allowance

(228)

(231)

(304)

Deferred tax assets, net of valuation allowance

182

265

215

Construction contract liabilities

(10)

Property and equipment

(55)

(47)

Goodwill and intangibles

(106)

(124)

(213)

Outside basis difference in assets held for sale

(78)

Other

(10)

(2)

Deferred tax liabilities

(171)

(259)

(215)

Deferred tax assets, net

$

11

$

6

$

NOL carryforwards by jurisdiction

Expiration Period

December 31, 2020

Federal

2035 - 2037

$

512

None

279

State

2022 - 2038

756

None

66

Non-U.S.

None

16

Schedule of changes in unrecognized tax benefits

Year Ended December 31, 

2020

    

2019

2018

Balance, beginning of year

$

7

$

$

Gross increases related to prior period tax positions

2

6

Gross increases related to current period tax positions

1

1

Gross decreases related to prior period tax positions

(1)

Balance, end of year

$

9

$

7

$