Condensed Financial Statements Of Guarantors (Condensed Consolidating Statements Of Earnings) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Net sales	$ 1,223.2	$ 1,171.9	$ 1,172.6	$ 1,173.3	$ 1,129.2	$ 962.4	$ 965.0	$ 991.9	$ 4,741.0	$ 4,048.5	$ 3,891.9
Cost of goods sold									(3,498.2)	(2,971.6)	(2,834.1)
Gross Profit	295.1	289.7	340.0	318.0	292.4	245.3	266.4	272.8	1,242.8	1,076.9	1,057.8
Selling, general and administrative expenses									(618.4)	(528.1)	(564.3)
Amortization of intangible assets									(78.2)	(49.3)	(42.3)
Impairment of intangible assets	(471.4)	(32.1)			(19.4)		(20.5)		(503.5)	(39.9)
Other operating expenses, net									(12.9)	(37.7)	(2.9)
Operating Profit									29.8	421.9	448.3
Interest (expense) income, net									(134.0)	(107.8)	(99.0)
Gain on forward sale contracts											17.6
Gain on sale of securities											70.6
(Loss) earnings before income taxes and equity earnings									(104.2)	314.1	437.5
Income taxes									(83.0)	(105.3)	(156.9)
(Loss) Earnings before Equity Earnings									(187.2)	208.8	280.6
Equity in earnings of Vail Resorts, Inc., net of related deferred income taxes											9.8
Net (Loss) Earnings	(370.1)	28.3	83.3	71.3	41.9	53.0	46.7	67.2	(187.2)	208.8	290.4
Parent Company [Member]
Net sales									529.3	516.3	544.5
Other intercompany revenues									1.8	1.8	1.9
Cost of goods sold									(420.4)	(386.6)	(409.5)
Gross Profit									110.7	131.5	136.9
Selling, general and administrative expenses									(134.4)	(139.2)	(152.6)
Amortization of intangible assets									(10.7)	(6.3)	(5.6)
Other operating expenses, net									(3.6)	(23.7)	(0.6)
Operating Profit									(38.0)	(37.7)	(21.9)
Interest (expense) income, net									(136.8)	(110.4)	(101.7)
(Loss) earnings before income taxes and equity earnings									(174.8)	(148.1)	(123.6)
Income taxes									83.1	32.7	15.3
(Loss) Earnings before Equity Earnings									(91.7)	(115.4)	(108.3)
Equity in earnings of subsidiaries									(95.5)	324.2	398.7
Net (Loss) Earnings									(187.2)	208.8	290.4
Guarantor Subsidiaries [Member]
Net sales									4,000.9	3,432.3	3,275.2
Other intercompany revenues									11.0	5.9	6.0
Cost of goods sold									(2,917.3)	(2,502.2)	(2,384.1)
Gross Profit									1,094.6	936.0	897.1
Selling, general and administrative expenses									(495.0)	(391.7)	(408.3)
Amortization of intangible assets									(61.4)	(38.9)	(35.1)
Impairment of intangible assets									(503.5)	(39.9)
Other operating expenses, net									(6.4)	(13.6)	(2.0)
Operating Profit									28.3	451.9	451.7
Interest (expense) income, net									0.6	0.2	(1.2)
Gain on forward sale contracts											17.6
Gain on sale of securities											70.6
(Loss) earnings before income taxes and equity earnings									28.9	452.1	538.7
Income taxes									(149.6)	(133.7)	(167.8)
(Loss) Earnings before Equity Earnings									(120.7)	318.4	370.9
Equity in earnings of subsidiaries									1.5	(10.2)	2.6
Equity in earnings of Vail Resorts, Inc., net of related deferred income taxes											9.8
Net (Loss) Earnings									(119.2)	308.2	383.3
Non-Guarantor Subsidiaries [Member]
Net sales									361.9	217.1	181.4
Other intercompany revenues									65.7	60.8	32.9
Cost of goods sold									(311.6)	(200.0)	(149.7)
Gross Profit									116.0	77.9	64.6
Selling, general and administrative expenses									(67.5)	(65.7)	(44.2)
Amortization of intangible assets									(6.1)	(4.1)	(1.6)
Other operating expenses, net									(2.9)	(0.4)	(0.3)
Operating Profit									39.5	7.7	18.5
Interest (expense) income, net									2.2	2.4	3.9
(Loss) earnings before income taxes and equity earnings									41.7	10.1	22.4
Income taxes									(16.5)	(4.3)	(4.4)
(Loss) Earnings before Equity Earnings									25.2	5.8	18.0
Net (Loss) Earnings									25.2	5.8	18.0
Eliminations [Member]
Net sales									(151.1)	(117.2)	(109.2)
Other intercompany revenues									(78.5)	(68.5)	(40.8)
Cost of goods sold									151.1	117.2	109.2
Gross Profit									(78.5)	(68.5)	(40.8)
Selling, general and administrative expenses									78.5	68.5	40.8
Equity in earnings of subsidiaries									94.0	(314.0)	(401.3)
Net (Loss) Earnings									$ 94.0	$ (314.0)	$ (401.3)