|
Income Taxes Summary of Gross Unrecognized Income Tax Benefits (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Gross Unrecognized Income Tax Benefits [Line Items] | |||
| Balance at January 1 | $ 236 | $ 224 | $ 197 |
| Increases and decreases as a result of positions taken during prior years | |||
| Transfers to valuation allowances | 0 | 0 | (2) |
| Other increases | 1 | 3 | 7 |
| Other decreases, including currency translation | 0 | (14) | (31) |
| Balances related to acquisitions | 13 | 2 | 34 |
| Increases as a result of positions taken during the current year | 36 | 31 | 23 |
| Decreases relating to settlements with tax authorities | 0 | (2) | 0 |
| Decreases as a result of a lapse of the applicable statute of limitations | (6) | (8) | (4) |
| Balance at December 31 | $ 280 | $ 236 | $ 224 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Increases and Decreases - Unrecognized tax benefits increases other. No definition available.
|
| X | ||||||||||
|
- Definition
Increases and Decreases - Unrecognized tax benefits transfers resulting from valuation allowances. No definition available.
|
| X | ||||||||||
|
- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Gross amount of decreases in unrecognized tax benefits resulting from foreign currency translation. No definition available.
|
| X | ||||||||||
|
- Definition
The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Gross amount of increases in unrecognized tax benefits resulting from acquisitions. No definition available.
|
| X | ||||||||||
|
- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|