Schedule I (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	$ 3,200,000,000	$ 4,900,000,000
Other Long-term Debt	121,000,000
Debt Instrument, Face Amount	16,952,000,000	16,705,000,000
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Origination of Notes Receivable from Related Parties	1,517,000,000	4,149,000,000	0
Long-term notes receivable from subsidiaries	4,215,000,000	0
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	5,300,000,000	7,800,000,000	5,600,000,000
Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Other Long-term Debt	121,000,000
Reclassification of Debt from Short-Term to Long-Term [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term notes receivable from subsidiaries	2,600,000,000
Intercompany Note [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Conversion, Original Debt, Amount		3,900,000,000
Debt Conversion, Converted Instrument, Amount		2,600,000,000
Equity Securities [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Conversion, Converted Instrument, Amount		1,300,000,000
Foreign Corporate Debt Securities [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount	0	588,000,000
Foreign Corporate Debt Securities [Member] | Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount		$ 588,000,000