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Label Element Value
Common Stock [Member]  
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity $ 6,000,000
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity 6,000,000
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity 6,000,000
Additional Paid-in Capital [Member]  
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity 3,539,000,000
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity 1,761,000,000
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity 1,761,000,000
Cumulative Effect, Period of Adoption, Adjustment [Member] | AOCI Attributable to Parent [Member]  
Cumulative Effect of Accounting Changes tl_CumulativeEffectOfAccountingChanges $ 182,000,000