|
Shareholders' Equity (Details 2) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
Defined benefit pension plans
|
Jun. 30, 2012
Defined benefit pension plans
|
Jun. 30, 2013
Defined benefit pension plans
|
Jun. 30, 2012
Defined benefit pension plans
|
Jun. 30, 2013
Derivative instruments
|
Jun. 30, 2012
Derivative instruments
|
Jun. 30, 2013
Derivative instruments
|
Jun. 30, 2012
Derivative instruments
|
Jun. 30, 2012
Marketable securities
|
Mar. 31, 2012
Marketable securities
|
Dec. 31, 2011
Marketable securities
|
Jun. 30, 2013
Total
|
Jun. 30, 2012
Total
|
Jun. 30, 2013
Total
|
Jun. 30, 2012
Total
|
|
| Changes in accumulated other comprehensive loss, presented net of tax | |||||||||||||||||||
| Accumulated other comprehensive loss, balance beginning of period | $ (521) | $ (533) | $ (517) | $ (511) | $ (501) | $ (7) | $ (12) | $ (10) | $ 7 | $ (2) | $ (2) | $ (2) | $ (540) | $ (531) | $ (521) | $ (496) | |||
| Reclassification from redeemable noncontrolling interest | (17) | (17) | (17) | ||||||||||||||||
| Other comprehensive income (loss) before reclassifications | 84 | 1 | 49 | (27) | (1) | (2) | (5) | (1) | 83 | (1) | 44 | (28) | |||||||
| Reclassifications to net income | 12 | 10 | 25 | 22 | 11 | 6 | 18 | 3 | 23 | 16 | 43 | 25 | |||||||
| Other comprehensive income (loss), net | 106 | 15 | 88 | (3) | 96 | 11 | 74 | (5) | 10 | 4 | 13 | (15) | 106 | 15 | 87 | (20) | |||
| Accumulated other comprehensive loss, balance end of period | $ (434) | $ (434) | $ (437) | $ (506) | $ (437) | $ (506) | $ 3 | $ (8) | $ 3 | $ (8) | $ (2) | $ (2) | $ (2) | $ (434) | $ (516) | $ (434) | $ (516) | ||