Income Taxes (Net Operating Loss Carryforwards Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
US Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 28
Net operating loss carryforward expiration	Dec. 31, 2021
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	48
Valuation allowance offset for State net operating loss carryforwards due to uncertain recoverability	45
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 1,500
CHINA
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration	Dec. 31, 2011