Label	Element	Value
Restricted Cash	us-gaap_RestrictedCash	$ 188,512,000
Restricted Cash	us-gaap_RestrictedCash	0
Restricted Cash	us-gaap_RestrictedCash	93,914,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets	2,567,488,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets	695,848,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets	456,480,000
Equity issued in (adjustments related to) acquisition	asb_EquityIssuedInAdjustmentsRelatedToAcquisition	0
Equity issued in (adjustments related to) acquisition	asb_EquityIssuedInAdjustmentsRelatedToAcquisition	488,408,000
Equity issued in (adjustments related to) acquisition	asb_EquityIssuedInAdjustmentsRelatedToAcquisition	79,000
Cash Equivalents, at Carrying Value	us-gaap_CashEquivalentsAtCarryingValue	716,048,000
Cash Equivalents, at Carrying Value	us-gaap_CashEquivalentsAtCarryingValue	782,784,000
Cash Equivalents, at Carrying Value	us-gaap_CashEquivalentsAtCarryingValue	400,232,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Including Goodwill	asb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsIncludingGoodwill	29,837,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Including Goodwill	asb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsIncludingGoodwill	23,548,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Including Goodwill	asb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsIncludingGoodwill	$ 261,243,000