Acquisition-related charges (National acquisition) (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | 12 Months Ended | ||||||
---|---|---|---|---|---|---|---|---|---|
Aug. 31, 2010
|
Dec. 31, 2011
National [Member]
|
Dec. 31, 2011
National [Member]
positions
|
Dec. 31, 2012
National [Member]
|
Sep. 23, 2011
National [Member]
|
Dec. 31, 2012
National [Member]
Minimum [Member]
|
Dec. 31, 2012
National [Member]
Maximum [Member]
|
Dec. 31, 2012
Severance and other benefits [Member]
National [Member]
|
Dec. 31, 2011
Severance and other benefits [Member]
National [Member]
|
|
Business Acquisition [Line Items] | |||||||||
Total consideration transferred to shareholders | $ 130 | $ 6,560 | |||||||
Goodwill | 3,528 | ||||||||
Amount of goodwill deductible for tax purposes | 0 | ||||||||
Inventory, fair value write-up | 96 | 96 | |||||||
Property, plant, and equipment, fair value write-up | 436 | 436 | |||||||
Property, plant, and equipment, depreciation rate per quarter from fair value write-up | 15 | ||||||||
Identified intangible assets subject to amortization, Weighted Average Useful Life (Years) | 2 years | 10 years | |||||||
Restructuring and Related Cost, Number of Positions Eliminated | 350 | ||||||||
Business Acquisition, Amount Related to Severance and Other Benefit Costs Paid | $ 65 | $ 14 |