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