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Fair Value Measurements - Additional Information (Detail) (USD $)
In Billions, unless otherwise specified |
3 Months Ended | 6 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2014
Interest Rate Swaps
|
Jun. 30, 2014
Forward Interest Rate Swaps
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Mar. 31, 2014
Forward Interest Rate Swaps
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Dec. 31, 2013
Forward Interest Rate Swaps
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Jul. 25, 2014
Forward Interest Rate Swaps
Subsequent Event
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Jun. 30, 2013
Cross Currency Swaps
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Jun. 30, 2013
Cross Currency Swaps
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Jun. 30, 2014
Cross Currency Swaps
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Mar. 31, 2014
Cross Currency Swaps
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Jun. 30, 2014
Previously Issued Cross Currency Swaps
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Jun. 30, 2014
Currency Swap Settled
|
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| Derivatives, Fair Value [Line Items] | |||||||||||
| Notional amount | $ 1.8 | $ 3.1 | $ 0.9 | $ 2.0 | $ 0.8 | $ 0.8 | |||||
| Derivative amount of hedged item | 1.2 | 5.4 | 1.6 | ||||||||
| Fair value of cross currency swaps | 0.2 | ||||||||||
| Pre-tax gain (loss) recognized in other comprehensive income (loss) | $ 0.1 | $ (0.1) | |||||||||