Label	Element	Value
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	$ 256,205,000
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	255,177,000
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	256,301,000
Dividends Payable	us-gaap_DividendsPayableCurrentAndNoncurrent	174,372,000
Dividends Payable	us-gaap_DividendsPayableCurrentAndNoncurrent	158,868,000
Dividends Payable	us-gaap_DividendsPayableCurrentAndNoncurrent	72,738,000
Accounting Standards Update 2016-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	40,065,000
Accounting Standards Update 2016-09 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 40,065,000