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Label Element Value
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption $ (15,000,000)
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption 58,000,000
Retained Earnings [Member]  
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption (15,000,000)
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption 68,000,000
Accumulated Other Comprehensive Income [Member]  
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption (10,000,000)
Shareholders' Equity [Member]  
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption 58,000,000
Cumulative effect on equity in period of adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption $ (15,000,000)