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Retirement Plans and Profit Sharing Arrangements (Text) (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 28, 2010
Dec. 31, 2016
Pension Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Yield period of U.S. Treasury Note   5 years
Minimum crediting rate (as a percent)   5.00%
Period of graded schedule for vesting   3 years
Minimum threshold percentage for amortization of actuarial gains and losses   10.00%
Unrecognized actuarial gain (loss) recognized in accumulated other comprehensive income   $ (127)
Unrecognized prior service credit (cost) recognized in accumulated other comprehensive income   1
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax   (3)
Estimated future amortization of actuarial gain (loss)   (7)
Estimated amounts that will be amortized from AOCI into net periodic benefit cost - prior service credit (cost)   $ 1
Defined Benefit Plan, Assets, Target Allocations    
Range of the difference between the actual allocation and target allocations (as a percent)   5.00%
Pension Plans [Member] | Minimum [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of Eligible Contribution 2.50% 2.50%
Pension Plans [Member] | Maximum [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of Eligible Contribution 10.00% 5.00%
Other Postretirement Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Unrecognized actuarial gain (loss) recognized in accumulated other comprehensive income   $ 3
Unrecognized prior service credit (cost) recognized in accumulated other comprehensive income   1
Estimated future amortization of actuarial gain (loss)   $ 1
Equity securities [Member] | Pension Plans [Member]    
Defined Benefit Plan, Assets, Target Allocations    
Target allocations (as a percent)   70.00%
Target allocations for pooled pension funds (as a percent)   83.00%
Debt securities [Member] | Pension Plans [Member]    
Defined Benefit Plan, Assets, Target Allocations    
Target allocations (as a percent)   20.00%
Target allocations for pooled pension funds (as a percent)   17.00%
Other assets [Member] | Pension Plans [Member]    
Defined Benefit Plan, Assets, Target Allocations    
Target allocations (as a percent)   10.00%