Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax [Line Items]
Undistributed earnings	$ 60
Net operating loss	66
Income tax benefits	190	137	128
Unrecognized benefits	18	12	11
Effective tax rate, if recognized	11	8
Interest and penalties related to income tax	5	4
Income taxes paid	129	148	153
Income taxes, net of refund	129	148	153
Finnish Tax Authority [Member]
Income Tax [Line Items]
Recognized interest, penalties	23
FTEN [Member]
Income Tax [Line Items]
Net operating loss	10
NASDAQ OMX [Member]
Income Tax [Line Items]
Net operating loss	5
Foreign [Member]
Income Tax [Line Items]
Net operating loss	99
State And Local Jurisdiction [Member]
Income Tax [Line Items]
Net operating loss	4
State Net Operating Loss [Member]
Income Tax [Line Items]
Operating loss carry forward expiration start date	2013
Operating loss carry forward expiration end date	2031
U.S. Federal Operating Loss [Member]
Income Tax [Line Items]
Net operating loss	15
Operating loss carry forward expiration start date	2023
Operating loss carry forward expiration end date	2031
Foreign Net Operating Loss [Member]
Income Tax [Line Items]
Net operating loss	33
Operating loss carry forward expiration start date	2018
Operating loss carry forward expiration end date	2021
Taxing Jurisdictions [Member]
Income Tax [Line Items]
Income taxes paid	1
Income taxes, net of refund	1
Share-based Compensation [Member]
Income Tax [Line Items]
Income tax benefits	$ 10	$ 2	$ 4