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Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Jul. 28, 2012
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Jul. 30, 2011
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Jul. 31, 2010
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| Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] | |||
| Unrecognized tax benefit beginning balance | $ 17.4 | $ 19.3 | $ 18.1 |
| Additions related to acquisitions | 35.7 | 7.6 | |
| Additions related to current period tax positions | 0.7 | 1.3 | 4.6 |
| Additions related to tax positions in prior years | 0.7 | 1.5 | 1.1 |
| Reductions related to prior period tax positions | (7.0) | (3.7) | (8.0) |
| Reductions related to settlements with taxing authorities | (2.1) | (0.5) | (3.6) |
| Reductions related to expiration of statute of limitations | (4.9) | (0.5) | (0.5) |
| Unrecognized tax benefit ending balance | $ 40.5 | $ 17.4 | $ 19.3 |
| X | ||||||||||
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- Definition
Unrecognized Tax Benefits, Increase, Resulting from Acquisitions No definition available.
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- Details
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- 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
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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
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- 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
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- 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
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