Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

- Definition

Write-off of the carrying amount of goodwill associated with all or a portion of a reporting unit that is sold in the period.

+ References+ Details

Goodwill (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	11 Months Ended
	Mar. 31, 2012	Nov. 30, 2011
Goodwill [Line Items]
Beginning Balance	$ 1,323,469
Goodwill of acquired businesses	325,951
Goodwill transferred
Goodwill disposed of relating to sales of businesses
Ending Balance	1,649,420
Goodwill impairment		0
Retail [Member]
Goodwill [Line Items]
Beginning Balance	823,573
Goodwill of acquired businesses	2,381
Goodwill transferred
Goodwill disposed of relating to sales of businesses
Ending Balance	825,954
National Programs [Member]
Goodwill [Line Items]
Beginning Balance	149,802
Goodwill of acquired businesses	253,901
Goodwill transferred
Goodwill disposed of relating to sales of businesses
Ending Balance	403,703
Wholesale Brokerage [Member]
Goodwill [Line Items]
Beginning Balance	273,783
Goodwill of acquired businesses	3,425
Goodwill transferred
Goodwill disposed of relating to sales of businesses
Ending Balance	277,208
Services [Member]
Goodwill [Line Items]
Beginning Balance	76,311
Goodwill of acquired businesses	66,244
Goodwill transferred
Goodwill disposed of relating to sales of businesses
Ending Balance	$ 142,555