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Reconciliation of Total Reportable Segments Operating Income to Consolidated Income before (Provision) Benefit for Income Taxes (Detail) (USD $)
In Millions, unless otherwise specified |
1 Months Ended | 3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Segment Reporting Information [Line Items] | ||||||||||||
| Severance, pension and benefit credits (charges) (Note 11) | $ 6,232 | $ (7,186) | $ (5,954) | |||||||||
| Gain on spectrum license transaction (Note 2) | 278 | |||||||||||
| Litigation settlements (Note 16) | (400) | (384) | ||||||||||
| Other costs (Note 8) | (300) | (276) | ||||||||||
| Operating income | 12,063 | 7,128 | 6,555 | 6,222 | (3,169) | 5,483 | 5,651 | 5,195 | 31,968 | 13,160 | 12,880 | |
| Equity in earnings of unconsolidated businesses | 142 | 324 | 444 | |||||||||
| Other income and (expense), net | (166) | (1,016) | (14) | |||||||||
| Interest expense | (2,667) | (2,571) | (2,827) | |||||||||
| Income Before (Provision) Benefit for Income Taxes | 29,277 | 9,897 | 10,483 | |||||||||
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Operating Segments
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| Segment Reporting Information [Line Items] | ||||||||||||
| Operating income | 26,370 | 21,828 | 19,486 | |||||||||
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Corporate, Eliminations and Other
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| Segment Reporting Information [Line Items] | ||||||||||||
| Operating income | $ (912) | $ (822) | $ (652) | |||||||||