Income Taxes (DTA, Val Allowance, and Tax Pay/Rec - Details 3) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Taxes receivable and payable
Deferred Tax Assets, Net of Valuation Allowance	$ 4,300	$ 3,700
Deferred Tax Assets, Valuation Allowance	4,116	3,575
Deferred Tax Assets, Net	205	148
Foreign net operating loss carryforwards	63	59
Foreign capital loss carryforwards	1	$ 1
Current taxes payable	8
Current taxes receivable	29
Domestic Tax Authority
Taxes receivable and payable
Operating Loss Carryforwards	1,200
State and Local Jurisdiction
Taxes receivable and payable
Deferred Tax Assets, Valuation Allowance	504
Operating Loss Carryforwards	223
Foreign Tax Authority
Taxes receivable and payable
Operating Loss Carryforwards	63
Federal Tax Authority [Member]
Taxes receivable and payable
Deferred Tax Assets, Valuation Allowance	3,600
New York State Empire Zone [Member]
Taxes receivable and payable
Current taxes receivable	10
State and Local Jurisdiction
Taxes receivable and payable
Current taxes receivable	11
Federal Cash Grant [Member]
Taxes receivable and payable
Current taxes receivable	$ 8