Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 243	$ 539	$ 1,344
Ending Balance	701	243	539
Tax provision of net actuarial loss and prior service cost related to pension and other postretirement benefit plans included in other comprehensive income	5
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(193)
Other comprehensive income before reclassifications	(139)
Reclassifications from accumulated other comprehensive loss to net earnings	0
Net other comprehensive income	(139)
Ending Balance	(332)	(193)
Pension and Postretirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(406)
Other comprehensive income before reclassifications	(47)
Reclassifications from accumulated other comprehensive loss to net earnings	10
Net other comprehensive income	(37)
Ending Balance	(443)	(406)
Unrealized Gain (Loss) on Forward Exchange Contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1)
Other comprehensive income before reclassifications	7
Reclassifications from accumulated other comprehensive loss to net earnings	(4)
Net other comprehensive income	3
Ending Balance	2	(1)
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(600)	(514)	(196)
Other comprehensive income before reclassifications	(179)
Reclassifications from accumulated other comprehensive loss to net earnings	6
Net other comprehensive income	(173)
Ending Balance	$ (773)	$ (600)	$ (514)