Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended		12 Months Ended					121 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Oct. 31, 2026	Sep. 30, 2011
Goodwill and Other Intangible Assets (Details) [Abstract]
Goodwill at September 30, 2011	$ 2,565,227,000						$ 2,565,227,000
Goodwill, Acquired During Period	172,420,000
Goodwill, Other Changes	2,860,000
Goodwill at December 31, 2011	2,740,507,000
Indefinite-lived intangibles-trade names	237,768,000								237,711,000
Finite Lived Intangible Assets [Line Items]
Intangible Assets Gross Excluding Goodwill	472,535,000								402,555,000
Intangible Assets Accumulated Amortization Excluding Goodwill	110,031,000								104,698,000
Intangible Assets Net Excluding Goodwill	362,504,000								297,857,000
Amortization of Intangible Assets	4,939,000	4,129,000
Future Amortization Expense Year One							20,900,000
Future Amortization Expense Year Two						19,200,000
Future Amortization Expense Year Three					16,600,000
Future Amortization Expense Year Four				12,400,000
Future Amortization Expense Year Five			11,700,000
Future Amortization Expense, after Year Five								48,800,000
Customer Relationships Member
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	175,138,000								117,540,000
Finite Lived Intangible Assets Accumulated Amortization	77,837,000								73,987,000
Finite Lived Intangible Assets Net	97,301,000								43,553,000
Other Finite Lived Intangibles [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	59,629,000								47,304,000
Finite Lived Intangible Assets Accumulated Amortization	32,194,000								30,711,000
Finite Lived Intangible Assets Net	$ 27,435,000								$ 16,593,000