Income Taxes Income Tax Expense (Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current Income Tax Expense (Benefit) [Abstract]
Total current income tax expense	$ 357	$ 136	$ 273
Deferred Income Tax Expense (Benefit) [Abstract]
Total deferred income tax benefit	(346)	(105)	(72)
Income tax expense	11	31	201
Ireland
Current Income Tax Expense (Benefit) [Abstract]
Ireland	17	0	0
United States - Federal
Current Income Tax Expense (Benefit) [Abstract]
United States - Federal	89	1	85
Deferred Income Tax Expense (Benefit) [Abstract]
United States - Federal	(295)	39	(2)
United States - State and local
Current Income Tax Expense (Benefit) [Abstract]
United States - State and local	7	5	2
Deferred Income Tax Expense (Benefit) [Abstract]
United States - State and local	(23)	2	8
Foreign - other
Current Income Tax Expense (Benefit) [Abstract]
Foreign - other	244	130	186
Deferred Income Tax Expense (Benefit) [Abstract]
Foreign - other	$ (28)	$ (146)	$ (78)