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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 19, 2017, the Corporation entered into a definitive agreement with UBS AG to acquire UBS Asset Management’s fund administration servicing business in Luxembourg and Switzerland, for an initial purchase price of approximately $175 million in cash, subject to adjustment. The transaction is expected to close in the second half of 2017, subject to applicable regulatory and fund board approvals and other customary closing conditions.