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Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Schedule of Income before Income Tax, Domestic and Foreign
The United States and foreign components of income (loss) before income taxes and noncontrolling interests were as follows:
 
Years ended December 31,
Dollars in millions
2015
 
2014
 
2013
United States
$
(35
)
 
$
(1,051
)
 
$
(141
)
Foreign:
 
 
 
 
 
United Kingdom
105

 
130

 
162

Australia
32

 
180

 
280

Canada
87

 
(101
)
 
(117
)
Other
123

 
65

 
116

Subtotal
347

 
274

 
441

Total
$
312

 
$
(777
)
 
$
300
TaxesOnMultipleFinancialStatements
The total income taxes included in the statements of operations and in shareholders' equity were as follows:
 
Years ended December 31,
Dollars in millions
2015
 
2014
 
2013
Provision for income taxes
$
(86
)
 
$
(421
)
 
$
(129
)
Shareholders' equity, foreign currency translation adjustment
(3
)
 
4

 
27

Shareholders' equity, pension and post-retirement benefits
(22
)
 
10

 
18

Shareholders' equity, compensation expense and other
—

 
—

 
—

Total income taxes
$
(111
)
 
$
(407
)
 
$
(84
)
Schedule of Components of Income Tax Expense (Benefit)
The components of the provision for income taxes were as follows:
Dollars in millions
Current
 
Deferred
 
Total
Balance as of December 31, 2015
 
 
 
 
 
Federal
$
(17
)
 
$
8

 
$
(9
)
Foreign
(55
)
 
(22
)
 
(77
)
State and other
—

 
—

 
—

Provision for income taxes
$
(72
)
 
$
(14
)
 
$
(86
)
 
 
 
 
 
 
Balance as of December 31, 2014
 
 
 
 
 
Federal
$
41

 
$
(333
)
 
$
(292
)
Foreign
(110
)
 
(11
)
 
(121
)
State and other
1

 
(9
)
 
(8
)
Provision for income taxes
$
(68
)
 
$
(353
)
 
$
(421
)
 
 
 
 
 
 
Balance as of December 31, 2013
 
 
 
 
 
Federal
$
(6
)
 
$
17

 
$
11

Foreign
(109
)
 
(31
)
 
(140
)
State and other
4

 
(4
)
 
—

Provision for income taxes
$
(111
)
 
$
(18
)
 
$
(129
)
Components Of Foreign Income Tax
The components of our total foreign income tax provision were as follows:

 
Years ended December 31,
Dollars in millions
2015
 
2014
 
2013
United Kingdom
$
(15
)
 
$
(22
)
 
$
(34
)
Australia
16

 
(24
)
 
(41
)
Canada
3

 
6

 
(3
)
Other
(81
)
 
(81
)
 
(62
)
Foreign provision for income taxes
$
(77
)
 
$
(121
)
 
$
(140
)
Components of Deferred Income Tax
The components of our deferred income tax provision were as follows:
 
Years ended December 31,
Dollars in millions
2015
 
2014
 
2013
Expected deferred benefit
$
14

 
$
254

 
$
48

Tax reserves and allowances on current year activity
(20
)
 
(210
)
 
(39
)
Tax reserves and allowances on beginning of year deferred balances
—

 
(320
)
 
(9
)
Unremitted foreign earnings
—

 
(77
)
 
(5
)
U.K. statutory rate change
(8
)
 
—

 
(13
)
Total deferred provision for income taxes
$
(14
)
 
$
(353
)
 
$
(18
)
Schedule of Effective Income Tax Rate Reconciliation
Our effective tax rates on income from operations differed from the statutory U.S. federal income tax rate of 35% as a result of the following:
 
Years ended December 31,
 
2015
 
2014
 
2013
U.S. statutory federal rate, expected (benefit) provision
35
 %
 
(35
)%
 
35
 %
Increase (reduction) in tax rate from:
 
 
 
 
 
Rate differentials on foreign earnings
(10
)
 
(5
)
 
(12
)
Noncontrolling interests and equity earnings
(8
)
 
(4
)
 
(5
)
State and local income taxes, net of federal benefit
2

 
(2
)
 
(1
)
Other permanent differences, net
—

 
2

 
(2
)
Contingent liability accrual
(1
)
 
9

 
7

U.S. taxes on foreign unremitted earnings
1

 
11

 
2

Non-deductible goodwill impairment
—

 
20

 
—

Increase in valuation allowance
6

 
58

 
15

U.K. statutory rate change
3

 
—

 
4

Effective tax rate on income from operations
28
 %
 
54
 %
 
43
 %
Schedule of Deferred Tax Assets and Liabilities
The primary components of our deferred tax assets and liabilities were as follows:
 
Years ended December 31,
Dollars in millions
2015
 
2014
Deferred tax assets:
 
 
 
Employee compensation and benefits
$
140

 
$
175

Foreign tax credit carryforwards
282

 
233

Accrued foreign tax credit carryforwards
97

 
89

Loss carryforwards
65

 
133

Insurance accruals
15

 
22

Allowance for bad debt
10

 
10

Accrued liabilities
45

 
51

Total gross deferred tax assets
654

 
713

Valuation allowances
(542
)
 
(538
)
Net deferred tax assets
112

 
175

Deferred tax liabilities:
 
 
 
Construction contract accounting
$
(12
)
 
$
(15
)
Intangibles
(25
)
 
(35
)
Depreciation and amortization
(2
)
 
(2
)
Unremitted foreign earnings
(39
)
 
(98
)
Other
(29
)
 
23

Total gross deferred tax liabilities
(107
)
 
(127
)
Deferred income tax assets, net
$
5

 
$
48
Summary of Valuation Allowance
The net deferred tax balance by major jurisdiction after valuation allowance as of December 31, 2015 was as follows:
Dollars in millions
Net Gross Deferred Asset (Liability)
 
Valuation Allowance
 
Deferred Asset (Liability), net
United States
$
505

 
$
(503
)
 
$
2

United Kingdom
80

 
—

 
80

Australia
1

 
(1
)
 
—

Canada
18

 
(14
)
 
4

Mexico
(91
)
 
(2
)
 
(93
)
Other
34

 
(22
)
 
12

Total
$
547

 
$
(542
)
 
$
5
Summary of Operating Loss Carryforwards
At December 31, 2015, the amount of gross tax attributes available prior to the offset with related uncertain tax positions were as follows:
 
 
Dollars in millions
December 31, 2015
 
Expiration
Foreign tax credit carryforwards
$
399

 
2019-2025
Foreign net operating loss carryforwards
$
122

 
2015-2035
Foreign net operating loss carryforwards
$
45

 
Indefinite
State net operating loss carryforwards
$
580

 
Various
Schedule Of Reconciliation Of Uncertain Tax Positions
A reconciliation of the beginning and ending amount of total unrecognized tax benefits is as follows:
Dollars in millions
2015
 
2014
 
2013
Balance at January 1,
$
228

 
$
68

 
$
95

Increases related to current year tax positions
18

 
13

 
3

Increases related to prior year tax positions
35

 
168

 
15

Decreases related to prior year tax positions
(3
)
 
(13
)
 
(36
)
Settlements
(2
)
 
(1
)
 
—

Lapse of statute of limitations
(16
)
 
(5
)
 
(2
)
Other, primarily due to exchange rate fluctuations affecting non-U.S. tax positions
(3
)
 
(2
)
 
(7
)
Balance at December 31,
$
257

 
$
228

 
$
68